Dorman 902-408 Engine Coolant Filler Neck
OE Quality 60-Day Returns
Dorman

Dorman 902-408 Engine Coolant Filler Neck

Brand Dorman 902-408
Attachment Method Snap On
Cap Included No
Color/Finish Black
Height 6 in
Material Plastic
Mounting Hardware Included Yes
Package Contents 1 Filler Neck and 1 Snap Ring
Fits Lexus and Toyota · 6 vehicles

OE direct replacement. Matches the fit and function of the original coolant filler neck.

Plastic construction. Built from quality materials for reliable performance and durability.

Snap-on attachment. Installs securely with a simple snap-ring connection.

Cross-references Dorman - Conduct-Tite 85905, Gates CO34837 and SKP SK902408 for the same application. See all 4.

$34.60Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $34.60
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Engine Coolant Filler Neck options

Dorman 902-408 Engine Coolant Filler Neck

Dorman 902-408 is an engine coolant filler neck built to match the fit and function of the original neck on specified applications. It uses durable plastic construction, a black finish, and a snap-on attachment method for a direct replacement on select Lexus RX350 and Toyota Sienna models.

Key Features

  • Direct replacement engine coolant filler neck for specified applications
  • Plastic construction with black finish
  • Snap-on attachment method for secure installation
  • Includes mounting hardware and snap ring
  • 6-inch height for OE-style fitment
  • Part number 902-408 for easy identification

Detailed Description

This coolant filler neck is engineered to match the original part’s fit and function, helping restore the connection point used in the cooling system. It is designed for 2007-2009 Lexus RX350 and 2007-2009 Toyota Sienna applications, making it a direct-fit option for owners searching for a Dorman 902-408 coolant filler neck for Lexus RX350 or Toyota Sienna cooling system repair. The plastic body and snap-on design support a clean OE-style replacement, while the included snap ring and mounting hardware help simplify the job.

This part cross-references Dorman - Conduct-Tite 85905 and Gates CO34837 for the same application.

Common Issues It May Address

  • Cracked or broken coolant filler neck housing
  • Coolant leaks at the filler neck connection point
  • Loose or damaged snap-on mounting interface
  • Cooling system service issues caused by a worn neck assembly
  • Need for an OE-style replacement on select Lexus RX350 and Toyota Sienna models

Installation Notes and Tips

Verify vehicle year and model before installation. This part uses a snap-on attachment method and includes the snap ring and mounting hardware needed for the replacement. Transfer or reuse the correct cap if required, since a cap is not included. Inspect the surrounding cooling system components for wear, residue, or damage before reassembly.

Quality Assurance

Dorman designs this filler neck to match original fit and function on specified applications and manufactures it from quality materials for reliable performance and durability.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2009LexusRX350N/A—
2009ToyotaSiennaN/A—
2008LexusRX350N/A—
2008ToyotaSiennaN/A—
2007LexusRX350N/A—
2007ToyotaSiennaN/A—
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - Conduct-Tite — 85905Gates — CO34837SKP — SK902408160410P180