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CUMMINS

CUMMINS 3936691 OEM P7100 FUEL SUPPLY LINE / TUBE – 5.9L 12V (1994–1998)

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SKU:
CUM3936691
MPN:
3936691
Shipping:
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  • CUMMINS 3936691 OEM P7100 FUEL SUPPLY LINE / TUBE – 5.9L 12V (1994–1998)
  • CUMMINS 3936691 OEM P7100 FUEL SUPPLY LINE / TUBE – 5.9L 12V (1994–1998)
  • CUMMINS 3936691 OEM P7100 FUEL SUPPLY LINE / TUBE – 5.9L 12V (1994–1998)
$107.00

Description

Cummins 3936691 — Genuine P7100 Fuel Supply Line / Tube (Filter to Pump)

MPN: 3936691  |  Also Known As: fuel supply line, fuel feed tube, inlet line (filter → injection pump)  |  Position: Fuel filter housing to P7100 injection pump

Restore factory fuel plumbing on your 12-valve. The genuine Cummins 3936691 fuel supply line is the OE tube that connects the fuel filter outlet to the P7100 pump inlet on 1994–1998 Ram 2500/3500 5.9L 12V. Built to OE bend profile and flare specs for a leak-free, direct-fit install.

Features & Benefits

  • OE routing & geometry for proper clearance to accessories and manifolds.
  • Direct-fit replacement for 1994–1998 12-valve P-pump trucks.
  • Restores reliability vs. aged, kinked, or improvised rubber hose sections.
  • Durable steel construction with correct end forms for sealing washers.
  • Genuine Cummins quality for long service life.

Verified Fitment (Automotive)

Year RangeEngineChassis
1994–1998 5.9L 12V (P7100) Ram 2500/3500

Industrial/Off-Highway: Used primarily on B-Series 5.9L (Euro 2 / ISB5.9) configurations—verify by ESN before ordering.

Compatibility Notes:

  • Ram 1998.5–2002 (VP44): not a direct fit. Some P7100-conversion builds use this line; verify your conversion parts list.
  • Common-rail (2003+): uses different fuel plumbing.

Specifications

  • Type: Rigid fuel supply tube (filter outlet → injection pump inlet)
  • OE Part Number: 3936691
  • Ends/Sealing: Uses sealing washers at each banjo/union (see “Often Paired With”)
  • Quantity Required: 1 per vehicle (sold individually)

Often Paired With

  • Sealing washers (required): (2) 3963988 (14 mm) and (2) 3963983 (12 mm) for line connections
  • Fuel filter & gaskets: service while the system is open
  • Primer lift pump check (address any suction leaks before start-up)

What’s In The Box

  • (1) Genuine Cummins Fuel Supply Line / Tube (3936691)
  • Sealing washers sold separately (see “Often Paired With”).

Installation Tips

  • Route the tube exactly as OEM to avoid contact with hot or moving components.
  • Always use new sealing washers; torque to spec and re-check after warm-up.
  • Prime the fuel system and inspect for seepage at both ends before road test.

FAQ

WILL THIS FIT MY 1994–1998 12-VALVE RAM?

Yes—this is the OE line from the fuel filter to the P7100 pump on ’94–’98 5.9L 12V Ram 2500/3500.

DOES IT COME WITH SEALING WASHERS?

No—order washers separately: (2) 3963988 (14 mm) and (2) 3963983 (12 mm).

DOES THIS FIT VP44 OR COMMON-RAIL TRUCKS?

Not directly. It’s for P7100 (12-valve). Some VP44 trucks converted to P-pump may use this line—verify your conversion kit.

WHAT DOES THIS LINE CONNECT?

It connects the fuel filter housing outlet to the P7100 injection pump inlet.

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 3936691.

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Additional Information

YEAR:
1994,1995,1996,1997,1998
MAKE:
DODGE CUMMINS
ENGINE:
5.9L
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1 Review

  • 5

    95’ Dodge fuel supply line

    Posted by Mike on May 5th 2018

    This part was different than my original OEM part on my 95’, mine was solid tubing, but this fit like it was supposed to. Easy repair.

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