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Dorman 902-5102CD Engine Coolant Reservoir CapOE Quality 60-Day Returns
Part #: 902-5102CD

Dorman 902-5102CD Engine Coolant Reservoir Cap

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Engine Coolant Reservoir Cap Replacement

Restore the cooling system seal with this Dorman engine coolant reservoir cap, part number 902-5102CD. It is a direct replacement for a cracked, missing, or worn coolant tank cap and is built to match the original twist-on design for a secure fit.

  • Direct replacement engine coolant reservoir cap
  • Twist-on attachment type with pressurized design
  • Plastic construction with black finish
  • 76.2 mm diameter for OE-style fitment
  • 15 psi maximum pressure rating
  • No vent and no pressure release lever
  • Fits applications using a 3 in x 1.5 in cap profile

Built To Match OE Specifications

Dorman 902-5102CD is engineered as a direct-fit coolant reservoir cap for vehicles that use a pressurized twist cap. The black plastic construction and 76.2 mm diameter help it seat properly on the coolant tank, while the 15 psi pressure rating supports normal cooling system operation. If you are replacing a damaged cap on a Ford, Lincoln, or Mercury cooling system, this part number 902-5102CD provides the correct style for a clean OE-style repair.

This part cross-references Ford Motorcraft (e.g., 4C4Z8100B, 572.2006) for the same application.

What It Helps Fix

  • Coolant loss from a cracked or missing reservoir cap
  • Pressure loss in the coolant expansion tank
  • Improper sealing at the coolant reservoir opening
  • Warning lights or overheating caused by low coolant level
  • Fitment issues from using the wrong cap diameter or pressure rating

Installation Notes

Inspect the reservoir neck and sealing surface before installation. Confirm the cap diameter, twist-on style, and pressure rating match the original part before use. Install by aligning the cap and turning it until fully seated. For Ford, Lincoln, and Mercury applications, verify the OE number and reservoir design before ordering Dorman 902-5102CD.

Quality Assurance

Dorman manufactures replacement cooling system hardware to match original equipment dimensions and function. Part number 902-5102CD is built as a direct replacement for the specified coolant reservoir cap application.

BrandDorman
Part Number902-5102CD
MaterialPlastic
Diameter76.2
Maximum Pressure Rating15
ColorBlack
Attachment TypeTwist on
TypeTwist
Pressure Release LeverNo
VentedNo
PressurizedYes
Length (In)3 in
Package Contents1 coolant tank cap
Width (in)1.5 in

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:

3578833C24C4Z8100B572.2006

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