Description
Genuine Freightliner 9002935 fuel tank cap gasket — the OEM rubber sealing ring that fits between the fuel-tank cap and tank filler neck on most Freightliner Class 8 tractors. Original Freightliner part, sized 2.35″ ID x 3.3″ OD x .135″ thick. Replaces a hardened, cracked, or compressed gasket that’s letting fuel weep, fumes escape, or moisture in.
Signs You Need a New Fuel Cap Gasket
- Diesel smell at the tank fill area
- Fuel weeping or wet residue around the cap when full
- Visible flat-spotting, cracking, or hardening of the existing gasket
- Cap takes excessive force to seat or rotates without sealing
- Water in fuel after rain or wash, traceable to the fill cap
Specifications
| Manufacturer | Freightliner (Genuine OEM) |
|---|---|
| Part Number | 9002935 |
| Part Type | Fuel Tank Cap Gasket |
| Inner Diameter | 2.35″ nominal |
| Outer Diameter | 3.3″ nominal |
| Thickness | .135″ nominal |
Cross References
This gasket replaces or is equivalent to the following part numbers:
- Freightliner: 9002935
Applications
This fuel cap gasket fits Freightliner trucks specifying 9002935, including:
- Freightliner Cascadia (all years)
- Freightliner Century Class
- Freightliner Columbia
- Freightliner Coronado (new generation)
- Freightliner M2 112
Replace the gasket on every cap removal once it shows compression or hardening — a leaking cap gasket is a frequent source of EVAP / fuel-system fault codes and “fuel smell at idle” complaints.

