Restore firm, even drum braking at the front-right wheel with the Dorman - First Stop Drum Brake Wheel Cylinder W45996. When you press the pedal, hydraulic fluid enters the cylinder and forces its internal pistons and cups outward, pushing the brake shoes against the drum. It installs as a direct-fit replacement across a wide range of classic GM cars and vans, including the 1964-1967 Chevrolet El Camino, 1964-1967 Pontiac GTO, 1965-1967 Chevrolet Chevelle, 1967-1969 Chevrolet Camaro and 1970-1974 Chevrolet Nova, plus many more — see the Buyer's Guide tab for the full application list (all use engine code All).
Dorman built this wheel cylinder to match the original's fit, function and performance on the covered vehicles, and each unit is manufactured and tested for quality assurance.
- EPDM rubber cups and boots: made with high-quality EPDM for long-lasting sealing performance.
- Cast iron body: with a 1.125 in inside diameter bore.
- Surface-tested bore: the cylinder bore is surface-tested to provide an optimum sealing surface for the pressure cups.
- Bleeder screw included: the 7/16-20 UNF inlet thread feeds the cylinder; the bleeder screw cap is not included.
Country of origin: China. Sold individually.
Interchange: 784-36041 · 78436041 · 84-36041 · 8436041 · W906206 · 101-1486 · 1011486 · W-82041 · W82041 · 33588 · 134.62041 · 13462041 · 135.62041 · 13562041 · WC13588 · 375-47026 · 37547026 · 18010302 · 5464981 · 5469304 · 45996 · 2037020 · WC37020 · F45996 · WC45996. Manufacturer part number W45996.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
Where does this wheel cylinder fit?
It's a direct-fit front-right drum brake wheel cylinder for many 1964-1974 GM cars and vans, such as the Chevrolet El Camino, Camaro and Nova and the Pontiac GTO. See the Buyer's Guide tab for the full list.
Does it include a bleeder screw?
Yes, the bleeder screw is included. The bleeder screw cap is not included.
What is the bore size and inlet thread?
The cylinder has a 1.125 in inside diameter bore, and the inlet uses a 7/16-20 UNF thread.
What are the seals and body made of?
The cups and boots are made with high-quality EPDM rubber for long-lasting sealing performance, and the body is cast iron.
What are signs this wheel cylinder may need replacing?
Brake fluid leaking at the wheel, a soft or spongy pedal, or fluid on the shoes or drum can be signs. Diagnose the cause first, since other parts can produce the same symptoms.
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