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WebbAutomann
Part number MR668
Automann lists MR668 as a Silent Block bushing, with an Incased Type construction and Standard sleeve. Its catalog dimensions are 20 mm bushing ID, 57 mm bushing OD, 108 mm overall length and 100 mm sleeve length. The source directs: For High Confine Use MR668M. Confirm the installed configuration; these dimensions and the similar-item listing do not establish vehicle-specific fitment or unrestricted interchange.
Confirm the exact application and configuration before selecting this part. Reference numbers and similar configurations do not guarantee interchange.
| Part number / SKU | MR668 |
|---|---|
| Brand | Automann |
| Department | Suspension |
| Part type | Bushings & Cab Mounts |
| Bushing (Type 1) | Silent BlockConditions / detailsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
| Bushing (Type 2) | Incased TypeConditions / detailsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
| Sleeve Type | StandardConditions / detailsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
| Bushing ID (A) | 20mmConditions / detailsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
| Bushing OD (B) | 57mmConditions / detailsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
| Overall Length (C) | 108mmConditions / detailsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
| Bushing Sleeve Length (D) | 100mmConditions / detailsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
Need a measurement or technical specification? Ask our parts team before choosing the part.
| Brand / reference type | Part number | Notes |
|---|---|---|
| Torque | TRB7690 | manufacturer-listed-directed-cross-reference. Reference conditionsDirected manufacturer reference only; reverse blanket interchange, package equivalence and make/model/year fitment are not established. Counterpart specifications, material, installation and other co-listed cross references are not transferred to the Automann owning article. |
| Freightliner | 1615951000 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
| Freightliner | 16-15951-000 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
Fitment has not been verified for this listing.
Compare the number on your existing part. If you’re unsure, our parts team can help check the match before you order.
No verified documents are listed for this part yet. Saved research PDFs remain drafts and are not attached here.
Ask for product documentationAutomann lists MR668 as a Silent Block bushing, with an Incased Type construction and Standard sleeve. Its catalog dimensions are 20 mm bushing ID, 57 mm bushing OD, 108 mm overall length and 100 mm sleeve length. The source directs: For High Confine Use MR668M. Confirm the installed configuration; these dimensions and the similar-item listing do not establish vehicle-specific fitment or unrestricted interchange.
Exact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval.
Not yet reviewed; no Automann claim verified in this dossier.
Local reference evidence only; not human/public approval. Completeness of owning Automann cross references, specifications, qualified fitment and genuine same-application variants remains unverified.
Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference.
Independent review and explicit public approval required; all original holds remain.
No source-backed fitment recorded yet; not proof that none exist.
No source-backed variants recorded yet; not proof that none exist.
Independent content review and explicit human approval remain required before public attachment.
Author candidate only: genuine separate actual-candidate review and root registration are still required. No public, stock/package, alias, title, fitment, interchange, engineering or warranty approval is granted.
Online ordering is coming soon. Contact our team about this part; listings do not confirm stock.
Contact us to confirm current availability and shipping options for this part.
More Bushings & Cab Mounts
| Freightliner | 1617769000 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Freightliner | 16-17769-000 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Freightliner | 6803220150 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Freightliner | 680-322-0150 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Freightliner | 680-322-01-50 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Freightliner | 6803220301 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Freightliner | 680-322-03-01 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Hendrickson | 37904 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Hendrickson | 37904000 | manufacturer-listed-competitive-reference. Reference conditionsExact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. Directed listing only, not reciprocal/transitive interchange, OEM certification or transfer of counterpart properties. |
|---|
| Durothane | DT1120 | manufacturer-listed-directed-cross-reference. Reference conditionsDurothane lists Automann MR668 on its exact DT1120 article. This is a directed manufacturer catalog reference, not a reciprocal or universal replacement approval. No DT1120 material, package, geometry, fitment or other co-listed cross number is transferred to MR668. Preserve MR668 source direction For High Confine Use MR668M and all installed-configuration restrictions; specific physical-stock suitability remains unverified. Exact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
|---|
| ATRO | SP46-52800 | manufacturer-listed-directed-cross-reference. Reference conditionsATRO lists Automann MR668 on its exact SP46-52800 article. This is a directed manufacturer catalog reference, not an Automann-authored reverse listing or universal replacement approval. The Automann row has blank Application Notes; the separate Gaff GAFF11066 row alone says Exact Cross. Dimensional differences remain unresolved: ATRO Part Dimensions states Length=4" versus Automann MR668 Overall Length (C) 108mm and Bushing Sleeve Length (D) 100mm. ATRO Outside Diameter — Reference states 2 1/4" versus Automann Bushing OD (B) 57mm. No common measurement basis, tolerance or installation evidence reconciles these labels/values; do not round or certify physical interchange. ATRO Inside Diameter 20mm agreeing with one MR668 field does not establish compatibility. No ATRO material, per-vehicle quantity, install tool, warranty, documentation, shipping weight, model/application notes, related items or co-listed references are transferred to MR668. Exact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
|---|
| Gaff | 11066 | manufacturer-listed-directed-cross-reference. Reference conditionsGaff lists MR668 within the Automann reference card on its exact 11066 article. This is a directed manufacturer catalog reference, not an Automann-authored reverse listing or universal replacement approval. MR668UB and MR712 on that same card remain distinct articles, not aliases for MR668. Dimensional differences remain unresolved: Gaff Inner Diameter (ID) 19.05mm (3/4in) versus Automann MR668 Bushing ID (A) 20mm; Gaff Outer Diameter (OD) 57.15mm (2 1/4in) versus Automann Bushing OD (B) 57mm; Gaff Length (LG) 107.95mm (4 1/4in) versus Automann Overall Length (C) 108mm. No common measurement basis, tolerance or installed-fit evidence clears interchange; do not round these into equality. No Gaff material, model/OEM/application list, per-unit quantity, installation item, warranty, related product or other co-listed reference is transferred to MR668. Preserve the literal co-listed Freightliner 680-32-01-50 and 680-322-01-05 strings as counterpart context only, without repair or inheritance. Exact Automann own branded article MR668; listed numbers do not establish genuine counterpart identity. Full source Description: Front and Rear of Front Spring 4.0in Wd. Similar to MR712 For High Confine Use MR668M Front and rear of front spring4.0in width. Preserve the literal For High Confine Use MR668M direction; it does not independently establish mandatory substitution or universal interchange. Similar MR712 is not interchange proof. SRI/RB211 and headerRB23 have unresolved roles;13ItemUsedIn parents are not Includes. No material/vehicle/year inference. Confirm supplied part and installed configuration; no VIN-specific or physical-package approval. |
|---|
Reference numbers alone do not guarantee fit. Confirm the exact application.
