18B4 AC Brake Drum Rear Fits NINETY
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Description / Notes
Terms of Use
AC Delco Brake Drum
ACDELCO – DURASTOP OE REPLACEMENT BRAKE DRUMS
Slow your roll with the ultra-durable design and unmatched performance of ACDelco’s DuraStop OE replacement brake drums. Established in 1899, ACDelco manufactures original GM parts and premium OE replacement parts for other brands in the automotive aftermarket
Made with ultra-durable G3000 materials
Optimally balanced to ensure quiet, smooth braking
Ready to install – machining unnecessary
Carefully evaluated (i.e. wear-, D3EA- and NVH-tested) to ISO/TS 16949 standards
Coating provides extra anti-rust protection
Designed to dissipate heat, minimize vibration and prevent premature brake pad and rotor wear
Directly compatible with numerous makes and models
Delivers same chamfer angle, plate thickness and vane configuration as OE part
Notes
Location: Rear
Series | DuraStop Series | Quantity sold | Sold individually
Location | Rear
Compatible with the following vehicles:
Buick
71-73 Centurion With 11 in. Brakes, With 4 in. Wide Drums
92,94-96 Commercial Chassis
91 Commercial Chassis For Vehicles Originally Equipped With Aluminum Drums, Cast Iron Replacement Must Be Done In Pairs
72-75,77-79 Electra With 11 in. Brakes, With 4 in. Wide Drums
87 Electra Estate Wagon For Vehicles Originally Equipped With Aluminum Drums, Cast Iron Replacement Must Be Done In Pairs
88-89 Electra Estate Wagon Wagon, For Vehicles Originally Equipped With Aluminum Drums, Cast Iron Replacement Must Be Done In Pairs
85-86 Electra Estate Wagon With 11 in. Brakes, With 4 in. Wide Drums
76 Electra Limited With 11 in. Brakes, With 4 in. Wide Drums
80-84 Electra (submodel: Estate Wagon, Limited, Park Avenue) With 4 in. Wide Drums, With 11 in. Brakes
72,76-83 Estate Wagon With 11 in. Brakes, With 4 in. Wide Drums
71-85 LeSabre With 11 in. Brakes, With 4 in. Wide Drums
88-89 LeSabre (submodel: Base, Estate Wagon) Wagon
90 LeSabre (submodel: Base, Estate Wagon) Wagon, For Vehicles Originally Equipped With Aluminum Drums, Cast Iron Replacement Must Be Done In Pairs
71-76 Riviera
94-96 Roadmaster
91 Roadmaster For Vehicles Originally Equipped With Aluminum Drums, Cast Iron Replacement Must Be Done In Pairs
92 Roadmaster Estate Wagon Wagon
92-93 Roadmaster (submodel: Base, Limited) Sedan, With Axle Code 6GM
Cadillac
91-92 Brougham With 4-1/4 in. Wide Drums, With 11 in. X 2 in. Brakes
94-96 Commercial Chassis With 11 in. x 2 in. Brakes
93 Commercial Chassis Brougham RWD, With 4-1/4 in. Wide Drums, With 11 in. X 2 in. Brakes
92 Commercial Chassis Brougham With 4-1/4 in. Wide Drums, With 11 in. X 2 in. Brakes
94-96 Fleetwood With 11 in. x 2 in. Brakes
93 Fleetwood (submodel: Base, Brougham) RWD, With 4-1/4 in. Wide Drums, With 11 in. X 2 in. Brakes
Checker
73-74 Aerobus
72 Aerobus With 11 in. x 2 in. Brakes
73-80 Marathon
72 Marathon With 11 in. x 2 in. Brakes
Chevrolet
71-75 Bel Air With 11 in. Brakes, With 4 in. Wide Drums
71-72 Biscayne With 11 in. Brakes, With 4 in. Wide Drums
71-72 Brookwood With 11 in. Brakes, With 4 in. Wide Drums
71-86 Caprice With 11 in. Brakes, With 4 in. Wide Drums
88-96 Caprice With 11 in. Brakes, With 4 in. Wide Drums, With Cast Iron Drum
91-94 Commercial Chassis With 11 in. Brakes, With 4 in. Wide Drums, With Cast Iron Drum
71-85 Impala With 11 in. Brakes, With 4 in. Wide Drums
71-72 Kingswood With 11 in. Brakes, With 4 in. Wide Drums
71-72 Townsman With 11 in. Brakes, With 4 in. Wide Drums
Oldsmobile
92 88 With 11 in. x 2 in. Brakes
71-81 98 With 11 in. Brakes, With 4 in. Wide Drums
77-92 Custom Cruiser With 11 in. Brakes, With 4 in. Wide Drums
71-76 Custom Cruiser With 4.3 in. Overall Height
84-85 Delta 88 With 11 in. Brakes, With 4 in. Wide Drums
86-91 Delta 88 With 11 in. x 2 in. Brakes
71 Delta 88 Custom With 4 in. Wide Drums, With 11 in. Brakes
80-83 Delta 88 Royale Brougham With 4 in. Wide Drums, With 11 in. Brakes
71-83 Delta 88 (submodel: Base, Royale) With 4 in. Wide Drums, With 11 in. Brakes
Pontiac
71-81 Bonneville With 4 in. Wide Drums, With 11 in. X 2 in. Brakes
71-81 Catalina With 4 in. Wide Drums, With 11 in. X 2 in. Brakes
71-72,75-78 Grand Safari With 4 in. Wide Drums, With 11 in. X 2 in. Brakes
83-86 Parisienne With 11 in. Brakes, With 4 in. Wide Drums
71-74,76-81 Parisienne With 4 in. Wide Drums, With 11 in. X 2 in. Brakes
87-89 Safari With Cast Iron Drum
Vehicle Fitment
| Make | Model | Years |
|---|---|---|
| Buick | Centurion | 1971-1973 |
| Buick | Commercial Chassis | 1991-1992, 1994-1996 |
| Buick | Electra | 1972-1989 |
| Buick | Estate Wagon | 1972, 1976-1983 |
| Buick | LeSabre | 1971-1985, 1988-1990 |
| Buick | Riviera | 1971-1976 |
| Buick | Roadmaster | 1991-1996 |
| Cadillac | Brougham | 1991-1992 |
| Cadillac | Commercial Chassis | 1992-1996 |
| Cadillac | Fleetwood | 1993-1996 |
| Checker | Aerobus | 1972-1974 |
| Checker | Marathon | 1972-1980 |
| Chevrolet | Bel Air | 1971-1975 |
| Chevrolet | Biscayne | 1971-1972 |
| Chevrolet | Brookwood | 1971-1972 |
| Chevrolet | Caprice | 1971-1986, 1988-1996 |
| Chevrolet | Commercial Chassis | 1991-1994 |
| Chevrolet | Impala | 1971-1985 |
| Chevrolet | Kingswood | 1971-1972 |
| Chevrolet | Townsman | 1971-1972 |
| Oldsmobile | 88 | 1992 |
| Oldsmobile | 98 | 1971-1981 |
| Oldsmobile | Custom Cruiser | 1971-1992 |
| Oldsmobile | Delta 88 | 1971-1991 |
| Pontiac | Bonneville | 1971-1981 |
| Pontiac | Catalina | 1971-1981 |
| Pontiac | Grand Safari | 1971-1972, 1975-1978 |
| Pontiac | Parisienne | 1971-1974, 1976-1981, 1983-1986 |
| Pontiac | Safari | 1987-1989 |
Specifications
| Category | Brake Drum |
| Brand | OFHZ |
| Condition | New |
| Fitment Type | Direct Replacement |
| Manufacturer Part Number | 1ADBDRNFCOLSNES9 |
| OE / Interchange Numbers | 18B4 |
Fitment & compatibility
This listing covers the vehicles shown in the title. Trim, engine size and drivetrain can change which part fits — if you are unsure, send us your VIN and we will confirm before you order.
We guarantee fitment: if a part we say fits does not fit, return it within 30 days and we pay the return shipping.
Shipping & returns
Orders placed before 2 PM EST ship the same business day from our US warehouse. Free standard shipping on orders over $49; orders under $49 ship at a flat rate shown at checkout.
Return anything unused within 30 days in its original packaging for a full refund. See our return policy.
Warranty
Every part carries a 12-month / 12,000-mile limited warranty against defects in materials and workmanship. Keep your order number — that is all we need to process a claim.