Overview
The Crown Automotive 4418903 is an O-ring set for the fuel pressure regulator, sold as one set. It carries a Direct Fit designation.
No vehicle is named for this set. Confirm the O-ring count, material and regulator models before ordering.
Key features
- O-ring set for the fuel pressure regulator
- Sold as a single set under one part number
- Direct Fit designation
- Brand: Crown Automotive
Sealing a fuel pressure regulator
A fuel pressure regulator relies on its seals to hold fuel pressure and keep fuel out of the vacuum side. When a seal hardens, flattens or nicks, the regulator can seep or hold pressure poorly, which often shows up as hard starting or rough running. Seal replacement is usually done with the regulator removed from the rail, so plan the work around a clean bench.
Before reassembly, clean the sealing surfaces and inspect the regulator body for scoring. A light coat of fuel-compatible lubricant helps a seal slide into place without pinching. Tighten the retaining hardware evenly and check for leaks once the system is pressurized.
- Clean sealing surfaces before reassembly
- Inspect the body for scoring
- Check for leaks once pressurized
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 4418903 |
| UPC | 70000702597 |
| Component | O-ring set |
| Application | Fuel pressure regulator |
| Fitment type | Direct Fit |
Vehicle fitment
No year, make, model or engine is named for this O-ring set. Compare the regulator’s seal sizes with your fuel system before ordering.
Confirm your vehicle’s year, model and trim before ordering.
What’s included
Count the O-rings in the set against your regulator before starting the repair.
Not included: the fuel pressure regulator itself.