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CUMMINS

CUMMINS 3918188 OEM 8MM FUEL SYSTEM SEALING WASHER – RAM 5.9L (1989–1998)

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SKU:
CUM3918188
MPN:
3918188
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  • CUMMINS 3918188 OEM 8MM FUEL SYSTEM SEALING WASHER – RAM 5.9L (1989–1998)
  • CUMMINS 3918188 OEM 8MM FUEL SYSTEM SEALING WASHER – RAM 5.9L (1989–1998)
  • CUMMINS 3918188 OEM 8MM FUEL SYSTEM SEALING WASHER – RAM 5.9L (1989–1998)
  • CUMMINS 3918188 OEM 8MM FUEL SYSTEM SEALING WASHER – RAM 5.9L (1989–1998)
$7.91

Description

Genuine Cummins

Cummins 3918188 — 8mm Fuel System Sealing Washer

MPN: 3918188  |  Also Known As: banjo bolt sealing washer, bonded sealing washer  |  Use: Fuel filter bleed screw & injector return line connections (2 washers per return line connection)

Why This Part

  • OE sealing for leak-free 8mm fuel banjo connections.
  • Direct-fit for 1989–1998 5.9L 12-valve Cummins fuel system service points.
  • ✓ Helps maintain fuel pressure & cleanliness after line/filter work.
  • Sold individually—order multiples for each banjo connection.
OE Fit Fuel System Multiple Required

Quick Specs

Type Fuel system sealing washer
Size 8 mm (banjo bolt applications)
OE Part # 3918188
Common Usage Fuel filter bleed screw & injector return line banjo connections
Qty Required Sold individually; typically 2 per banjo connection

Verified Fitment (Automotive)

Year RangeEngineChassis
1989–1998 Cummins 5.9L 12-Valve (B-Series) Dodge Ram 2500/3500

Notes: Also used on related B-Series/industrial applications—verify by ESN for non-automotive engines.

Often Paired With

  • Fuel Filter Bleed Screw: 3924726 (uses 3918188 washers)
  • 8mm Fuel Banjo Bolt: 3916361 (requires two 3918188 washers)
  • Fuel Return Check Valve: 3905707 (uses 3918188 washers)

What’s In The Box

  • (1) Genuine Cummins 8mm Sealing Washer (3918188)

Install Tips

  • Use two washers per banjo connection (one on each side of the fitting) where specified.
  • Do not reuse old washers. Torque to spec and check for seepage after warm-up.
  • Work clean to avoid contamination in the fuel system.

FAQ

WILL THIS FIT MY 1989–1998 5.9L CUMMINS?

Yes—3918188 is commonly used on 1989–1998 5.9L 12-valve fuel systems for the bleed screw and injector return line banjo connections.

HOW MANY WASHERS DO I NEED?

Plan on at least two per banjo connection. Many jobs need several washers—order extras to be safe.

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 3918188 sealing washer for proper fit and reliable sealing.

WHERE IS THIS USED?

Fuel filter bleed screw and injector return line banjo connections on 5.9L 12-valve engines.

CAN I REUSE MY OLD WASHERS?

No. Reusing old sealing washers risks leaks. Always install new washers.

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Additional Information

Vehicle Year:
1994,1995,1996,1997,1998
Vehicle Make:
DODGE
Vehicle Model:
5.9L
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