HomeBrake > Brake HydraulicsDorman W37033 Drum Brake Wheel Cylinder - Front Left Lower or Front Left Upper
Part #: W37033

Dorman W37033 Drum Brake Wheel Cylinder - Front Left Lower or Front Left Upper

Front Left Lower and Front Left Upper
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$45.41Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Drum Brake Wheel Cylinder for Precise Braking

The Dorman W37033 drum brake wheel cylinder is engineered to restore proper brake function in compatible vehicles. Designed with durable cast iron and a 1.125-inch bore diameter, this wheel cylinder ensures consistent hydraulic pressure for safe stopping performance.

  • Includes bleeder screw for easy brake system bleeding
  • Constructed from cast iron for strength and longevity
  • 1.125-inch bore diameter for accurate hydraulic operation
  • Brake component inlet thread size of 3/8-24 inches
  • Thread diameter of 3/8 inch for secure fitting
  • Package contains one drum brake wheel cylinder (part number W37033)

Durable Construction and Precise Specifications

The Dorman W37033 wheel cylinder is made from cast iron, providing the necessary durability to withstand the pressures of brake hydraulics. Its 1.125-inch bore diameter is designed to deliver consistent hydraulic force to the brake shoes, ensuring reliable braking response. The included bleeder screw simplifies maintenance by allowing air to be purged from the brake lines, which is critical for maintaining brake system integrity. The 3/8-24 inch brake component inlet thread size and 3/8 inch thread diameter ensure compatibility with specific brake line fittings, making it suitable for certain vehicle models requiring these specifications.

Compatible Vehicles and Fitment Details

This drum brake wheel cylinder is compatible with various makes and models that require a 1.125-inch bore diameter and 3/8-24 inch inlet thread size. It is important to verify vehicle-specific fitment before purchase to ensure proper installation and function. The Dorman W37033 is commonly used in applications where cast iron wheel cylinders are specified for brake hydraulics.

Common Brake Issues Addressed

  • Brake fluid leaks from worn or damaged wheel cylinders
  • Spongy or unresponsive brake pedal due to air in brake lines
  • Uneven brake shoe wear caused by malfunctioning wheel cylinders
  • Reduced braking efficiency from corroded or seized components
  • Brake drag or sticking caused by internal cylinder failure

Installation Notes and Tips

When installing the Dorman W37033 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove any trapped air. Verify that the thread sizes match the vehicle’s brake line fittings to avoid leaks. Inspect brake shoes and hardware for wear or damage during installation and replace as necessary. Proper torque specifications should be followed to secure the wheel cylinder without causing damage.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The W37033 wheel cylinder undergoes rigorous quality control to ensure durability and reliable performance. Please refer to Dorman’s official warranty policy for specific coverage details.

BrandDorman
Part NumberW37033
Bleeder Screw IncludedYes
Bleeder Screw Cap IncludedNo
Casting MaterialCast iron
Bore Diameter1.125
Brake Component Inlet Thread Size3/8-24 in
Package Contents1 drum brake wheel cylinder
Thread Diameter3/8

This part fits 0 vehicles. Search below:

YearMakeModelPositionNotes

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

134.8201918E522622820290873533714341037C914337584-50007C4TZ2062DF43375W-92019W906214WC250090WC37033

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.