3757X Brake Drum 16.5 x 7 Rear Gunite Made in USA

Part number GUN3757X

Gunite's September 2023 catalog lists 3757X as an X-designation balanced, outboard-mounted brake drum for disc wheels.

Confirm the exact application and configuration before selecting this part. Reference numbers and similar configurations do not guarantee interchange.

Specifications

Part number / SKU	GUN3757X
Brand	Gunite
Department	Brakes
Part type	Brake Drums
Drum Weight	114 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Drum Mount	O Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Wheel Type	Disc Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Brake Size	16.50x7.00 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Overall Depth	11.18 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Width of Brake Surface	7.44 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Backface Thickness	0.50 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Pilot Dia.	8.78 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Bolt Circle Dia.	11.25 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Bolt Holes No.	10 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Bolt Holes Size	1.00 Conditions / details Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.
Gunite catalog balance designation	X - Balanced Conditions / details Historical Gunite own catalog attribute for exact3757X; owner-confirmed GUN3757X↔3757X bridge already archived in baseline. Not measured stock/balance certification, dimensional unit inference, current lifecycle or installation/fitment approval. All11 old numeric/unit-held objects remain unchanged. Historical September2023 Rev5 catalog balance designation for exact3757X only, not a measured stock balancing result or tolerance/certification. No dimensional/weight unit inferred. Source: https://www.accuridecorp.com/sites/default/files/resources/2023-10/WE1.011%20Rev.%205%20Gunite%20Brake%20Drum%20Product%20Catalog.pdf, PDF pages 11. Exact attributed catalogue article context only; not physical-stock inspection, package contents, supplied condition or installation approval. Existing source, identity, revision, material, stock and fitment holds remain. No reciprocal/transitive interchange, counterpart-property transfer or whole-product completion.
Gunite historical drum construction type	BEA Conditions / details Historical Gunite own catalog attribute for exact3757X; owner-confirmed GUN3757X↔3757X bridge already archived in baseline. Not measured stock/balance certification, dimensional unit inference, current lifecycle or installation/fitment approval. All11 old numeric/unit-held objects remain unchanged. Printed2017 Rev2 construction classification only. Its three-letter type combines mounting flange, wrap-around and bell-end profiles; no numerical dimension or adjacent example3721AX property is transferred. Rev5 omits this column; no present-manufacture revision assertion. Historical January2017 Rev2 raw construction classification BEA only. Rev5 omits this column; do not assert present-stock revision or expand diagram shapes into dimensions or numerical properties. Example3721A®X is a separate article. Source: https://www.accuridecorp.com/sites/default/files/resources/2023-05/WE1.011%20Rev%202%20Gunite%20Brake%20Drum%20Products%20Catalog.pdf, PDF pages 6, 10, 60. Exact attributed catalogue article context only; not physical-stock inspection, package contents, supplied condition or installation approval. Existing source, identity, revision, material, stock and fitment holds remain. No reciprocal/transitive interchange, counterpart-property transfer or whole-product completion.

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Cross References

Brand / reference type	Part number	Notes
KIC	54213-018	Historical KIC Competitive Interchange (Competitor to KIC). Reference conditions Printed2015 KIC catalog page58, exact GUNITE3757X→KIC54213-018 row, guide-only, subject to proper form/fit/function inspection before use. Source2015; URL2019-10; retrieved2026-10-19. Not a Gunite-authored reciprocal equivalence or pairwise/transitive closure. Unsuffixed3757 maps separately to54213-01. No Webb66353B or3647X cross added by sharing KIC output. KIC-authored historical2015 Competitor-to-KIC guide row, Gunite3757X→KIC54213-018, only. Check proper form, fit and function before installation/use; guide-only information subject to errors/changes/omissions. No Gunite-authored reciprocity, unsuffixed3757 normalization, other KIC output aliases or Webb/3647X transitive closure. Source: https://www.accuridecorp.com/sites/default/files/resources/2019-10/KIC-Product-Catalog.pdf, PDF pages 1, 3, 59. Source: https://www.accuridecorp.com/sites/default/files/resources/2019-10/KIC-Product-Catalog.pdf, PDF pages 64. Exact attributed catalogue article context only; not physical-stock inspection, package contents, supplied condition or installation approval. Existing source, identity, revision, material, stock and fitment holds remain. No reciprocal/transitive interchange, counterpart-property transfer or whole-product completion.

Reference numbers alone do not guarantee fit. Confirm the exact application.

Have another part number? Ask us to check it.

Detailed product and selection notes

Gunite's September 2023 catalog lists 3757X as an X-designation balanced, outboard-mounted brake drum for disc wheels.

Owner confirmation 2026-10-11: GUN3757X = genuine Gunite 3757X, original manufacturer package; no technical/public approval. Raw table text/numbers only. No unit for Weight, bare Brake Size/offset/dimensions, or K/k GAWR notation is inferred. Mount O is defined as Outboard Mount in the numeric-table legend; raw values are retained. Manufacturer document date 2023-09; observed 2026-10-11. Document-specific, not current installation approval. Historical September 2023 Rev5 raw table field only, not a measured stock value, current lifecycle, GAWR or fitment approval; no inferred units.

Brake-size designation is retained literally without inferred units or conversion; no dimensional fit or vehicle/axle compatibility is established by this description.

The saved September 2023 catalog is historical evidence, not a current lifecycle, availability or installed-stock revision check. Confirm exact finished part/suffix and fit, form and function before installation.

Historical Gunite own catalog attribute for exact3757X; owner-confirmed GUN3757X↔3757X bridge already archived in baseline. Not measured stock/balance certification, dimensional unit inference, current lifecycle or installation/fitment approval. All11 old numeric/unit-held objects remain unchanged. Optional historical catalog lead only; keep September2023 attribution, exact3757X suffix, and all original no-units/no-fitment/no-current-stock/lifecycle qualifications. No axle model, rear position or USA origin inferred from public title. Source: https://www.accuridecorp.com/sites/default/files/resources/2023-10/WE1.011%20Rev.%205%20Gunite%20Brake%20Drum%20Product%20Catalog.pdf, PDF pages 11. Exact attributed catalogue article context only; not physical-stock inspection, package contents, supplied condition or installation approval. Existing source, identity, revision, material, stock and fitment holds remain. No reciprocal/transitive interchange, counterpart-property transfer or whole-product completion.

Part type: Brake Drums
Department: Brakes

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