A-Premium Rear Drum Brake Wheel Cylinder 13/16" Bore — Cast Iron, Pressure-Tested, Bleeder Screw

A-Premium rear drum brake wheel cylinder designed to replace OEM units on select Jeep, Dodge, Plymouth and Chrysler models with a 13/16" (0.813") bore — cast iron construction and pressure-tested for reliable braking actuation.

This wheel cylinder is an aftermarket replacement part made by A-Premium to fit rear drum brake systems on a range of Jeep, Dodge, Plymouth and Chrysler vehicles produced in the early 1990s and later model years listed below. It installs on both driver and passenger rear positions, provides a 3/8-24 inlet thread and ships with the bleeder screw included for straightforward bleeding and maintenance. The unit is made from cast iron and has undergone pressure and high-temperature testing to meet durability expectations for routine road use.

Which vehicles does this A-Premium rear wheel cylinder fit?

This cylinder fits specific model years and brake configurations—primarily 9-inch drum setups and various export/Europe-built versions. Always enter your vehicle details in the listing to confirm fitment before ordering.

• Chrysler Town & Country 1991–1993 (Europe-built)
• Dodge Caravan / Grand Caravan 1991–1993 (Europe-built)
• Plymouth Grand Voyager / Voyager 1991–1993 (Europe-built)
• Jeep Cherokee models 1990–2001 (selected years without ABS; 9-inch brakes) and TJ/Wrangler models 1990–2000 where specified

What are the key specifications and hardware included?

The cylinder has a 13/16" (0.813") inside diameter and a 3/8-24 inlet thread, matching common OEM thread sizes for the applications listed. A bleeder screw is included to help with brake fluid evacuation; a bleeder screw cap is not included.

• Inside diameter: 0.813 inch (13/16")
• Brake inlet thread: 3/8-24 inch
• Material: cast iron for strength and wear resistance
• Includes bleeder screw; no bleeder cap

How does A-Premium test this wheel cylinder for safety and durability?

A-Premium subjects the cylinder to pressure and thermal tests to detect leaks and material resilience under operating stresses. Testing helps ensure the unit remains leak-free across typical braking pressures and elevated temperatures that components can encounter during service.

• Pressure testing range from 0.2 MPa up to 20 MPa
• High-temperature exposure test at 120°C to check thermal stability
• Visual and dimensional checks for thread and bore accuracy

How do I verify this cylinder matches my vehicle and installation needs?

Confirm compatibility by inputting your vehicle year, make, model and any brake options on the product page. Cross-reference the provided reference numbers and the cylinder’s bore/thread specs with the old part before installation.

• Reference numbers: W37862, 82042, 4423601, 5252617
• Verify 13/16" (0.813") bore and 3/8-24 thread match your existing cylinder
• Check for ABS presence—many fitments exclude ABS-equipped systems

Who this is for: This A-Premium rear drum brake wheel cylinder is aimed at DIY mechanics, restoration specialists and professional technicians replacing worn or leaking rear wheel cylinders on compatible Jeep, Dodge, Plymouth and Chrysler vehicles. It is suitable when you need a cast-iron replacement with OEM-style thread and bore dimensions and want a part that has passed pressure and temperature checks for dependable braking system performance.