Reverse Drum for Dodge A518 A618 48RE 52118057 6.25 Inch OD

Cross-reference OEM part number: 52118057

This reverse drum is for the later-style A518/A618/48RE configuration using a press-on race and 14-roller design. It has a 6.25-inch outside diameter at the reverse-band surface and a 6.625-inch outside-diameter shoulder.

Part Details

• Part type: Automatic transmission reverse drum

• Transmission applications: A518, A618, 48RE

• OEM reference number: 52118057

• Race style: Press-on race

• Roller configuration: 14 roller

• Band-surface outside diameter: 6.25 inches

• Shoulder outside diameter: 6.625 inches

• Quantity: One reverse drum

Important Identification Information

Confirm the original reverse drum before ordering. This part is intended for the press-on-race, 14-roller, 6.25-inch drum configuration. It is not a replacement for earlier slide-on-race or 12-roller designs.

Match all of the following before purchase:

• Transmission model

• Original drum race style

• Roller count

• 6.25-inch band-surface diameter

• 6.625-inch shoulder diameter

• OEM reference number 52118057, when applicable

Vehicle year, make, and model alone may not confirm compatibility because internal transmission configurations can vary.

Service Information

The reverse drum provides the operating surface for the reverse band and works with the roller clutch and related reverse components. During a rebuild, inspect the drum’s band-contact surface, press-on race, roller assembly, reverse band, snap rings, and surrounding components for scoring, heat damage, wear, or incorrect prior installation.

A worn or damaged reverse drum can contribute to reverse-band wear, poor band contact, noise, or reverse-engagement concerns. Proper diagnosis, assembly, and band adjustment are necessary; this part is not represented as a guaranteed repair for an undiagnosed transmission issue.

Sold as one reverse drum. Verify actual package contents and fitment before installation. Refill with the transmission manufacturer’s specified fluid. Lubegard ATF Protectant may be considered when compatible with the application and used according to its directions.