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Description
1978-1988 Regal Pro+ Brake System Rear 4302359BFits 1978 88 GM G Body Cars w OE Saginaw 10 Bolt C clip (BIH) Drum Brake Housing Ends Features: 2 Piece, 6 Piston, 6P Caliper Manufactured in Phoenix, AZ CNC Machined from US Sourced Forged or Billet Aluminum Powder Coated Finish Stainless Steel Pistons, Abutments and Noise Suppression Clips Staggered Pistons to Minimize Uneven Pad Wear Dual Seals, Dust Weather & Pressure 2 Piece Slot, Drilled, Zinc Plate Rotor w Billet Aluminum Hat Specs:
Fits 1978-88 GM G-Body Cars w/OE Saginaw 10 Bolt C-clip (BIH) Drum Brake Housing Ends
Features:
- 2-Piece, 6-Piston, 6P Caliper Manufactured in Phoenix, AZ
- CNC Machined from US Sourced Forged or Billet Aluminum
- Powder Coated Finish
- Stainless Steel Pistons, Abutments and Noise Suppression Clips
- Staggered Pistons to Minimize Uneven Pad Wear
- Dual Seals, Dust/Weather & Pressure
- 2-Piece Slot, Drilled, Zinc-Plate Rotor w/Billet Aluminum Hat
Specs:
| Applications | GM G-Body 78-88 |
|---|---|
| Axle | Rear |
| Brand | Baer Brakes |
| Caliper | 6P |
| Caliper Color | Black |
| Disc Brake Caliper (Rear) Piston Quantity | 6 |
| Disc Brake Caliper (Rear) Type | Floating |
| Disc Brake Pad FMSI Number | D0731 |
| Disc Brake Rotor (Rear) Construction | Vented |
| Disc Brake Rotor (Rear) Outside Diameter | 14.000IN |
| Emission Code | 6 |
| Export Description | Brake Components |
| Fitment Notes | w/OE Saginaw 10 Bolt C-clip (BIH) Drum Brake Housing Ends |
| Grade Type | Performance |
| Hose Material | Stainless Steel |
| Includes Park Brake | Yes |
| Includes Park Brake Cables | Yes |
| Lug Count | 5 Lug |
| Min Wheel Dia (verify using template) | 18IN |
| Product Line | 14 Inch Pro+ |
| Product Type | 14 Inch Pro+ Rear Brake Kit |
| Prop 65 (C, R or CR) | CR |
| Prop 65 - Long Label | WARNING: This product can expose you to chemicals including Toluene Diisocyanate, and Nickel which are known to the State of California to cause cancer. For more information, visit www.P65Warnings.ca.gov |
| Prop 65 - Short Label | WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov |
| Prop 65 Yes/No | Yes |
| Rotor Thickness | 1.150IN |
| Rotor Type | 2-Piece |
| Surface Type | Slotted, Drilled & Zinc Plated |
| System Notes | Fits stock Saginaw 10 bolt C-clip, drum brake rear end |
| Template | Q085P |
| Title | Pro+ Brake System Rear |
| Wheel Lug/Bolt Pattern | 5x4.75 |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1978-1988 | Buick | Regal | |
| 1978-1987 | Chevrolet | El Camino | |
| 1978-1983 | Chevrolet | Malibu | |
| 1978-1988 | Chevrolet | Monte Carlo | |
| 1978-1981 | Oldsmobile | Cutlass | |
| 1985-1988 | Oldsmobile | Cutlass | |
| 1978-1988 | Oldsmobile | Cutlass Supreme | |
| 1978-1988 | Pontiac | Grand Prix |
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4.5 ★★★★★
Based on 2043 reviews
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Product Reviews
★★★★★ 5
Helpful Tool Kit for MerCruiser Maintenance
This tool kit made servicing the gimbal bearing and checking engine alignment much easier than improvising with generic tools. The machining looks solid and the tools fit properly with MerCruiser components. Helpful set for anyone doing their own marine maintenance work. Definitely useful to have around for sterndrive service jobs.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Saves So Much Time, Perfect Fit On Mercruiser Pre-Alpha Outdrive.
This is a very useful kit. Perfect fit to exchange and align the gimbal bearing on a Mercruiser MR/Pre-Alpha Outdrive. The metal rods are strong and well machined to fit the gimbal bearing and the template lines up great with the housing studs. The overall production quality is very good. Great value because the tools are very durable but for me the biggest value is the time saved. I had the bearing out in about 10 minutes. The ability to line up the bearing before attempting to attach the outdrive upper gear unit is very convenient and saves so much time. This are simple tools, very easy to use.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Easy to use
Works great
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Works well. You need to drill a 3/8” hole
Appears to be well made, alignment bar slides in nicely. As stated, you need to drill a hole in the bar for the gimble bearing driver, the directions are not clear, what I did was before I take out the old gimble bearing, put an O ring on the bar close to the last step on the bar, slide the bar all the way in, then carefully slide the bar out, this marks the distance from the back of the gimble bearing to where the shaft on the outdrive bottoms out, move the O ring a 1/4” towards the stepped part of the alignment tool (this is so you won’t bottom out the alignment tool when driving the gimble bearing in) then slide the driver puck up to the O ring and use a 3/8” diameter transfer punch through the side hole in the puck to mark the bar. You need to drill a 3/8” diameter hole in the alignment bar, two V blocks, some clamps, and a drill press will make drilling much easier, after the bar is securely mounted and centered in the drill press, use a center drill, then 1/4” drill first, using plenty of oil, drill all the way through, then use the 3/8” drill, deburr both sides and you should be good to go. People complain that it doesn’t come pre-drilled, the reason is that not all out drives are the same so you have to fit it to the outdrive that you have. Fortunately, I have a machine shop at my house and have a jig setup with various drill bushings, but the method I described above should work for you. Just make sure you’re perfectly centered and secure before you start drilling.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
A must pull your gimbal bearing
You do need to drill a hole but worked perfect
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Reviewed in the United States on December 26, 2025