Product Description
Genuine Cummins
Cummins 4935974 — #4/#5 Fuel Injection Line / Injector Fuel Supply Tube
MPN: 4935974 | Also Known As: injector fuel supply tube, high-pressure injector line | Positions: Cylinder #4 or #5
Why This Part
- ✓ OE high-pressure line for precise rail-to-injector sealing.
- ✓ Direct-fit for 2007.5–2018 Ram 6.7L ISB (#4 or #5 position).
- ✓ Updated design helps prevent cracking/leaks on #4 line.
- ✓ Built to Cummins specs for durability under vibration & heat.
OE Fit Position-Specific 1 Per Cylinder
Quick Specs
| Type | Injector fuel supply tube / fuel injection line |
|---|---|
| OE Part # | 4935974 |
| Positions | #4 or #5 (6.7L ISB) |
| Qty Required | 1 per affected cylinder (sold individually) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2007.5–2018 | Ram 6.7L ISB (24V Common-Rail) | Ram 2500/3500 |
Industrial/Off-Highway: Used primarily on EPA13 ISB/QSB 6.7 variants—verify by ESN before ordering.
Often Paired With
- Other 6.7L lines: #1 (4935981), #2/#3 (4935982), #6 (4935976)
- Line clamps/hardware if worn or damaged
- Diagnostic check after install to confirm no high-pressure leaks
What’s In The Box
- (1) Genuine Cummins Injector Fuel Supply Tube / Fuel Injection Line (4935974)
- Hardware not included (reuse if serviceable or replace as needed)
Install Tips
- Position-specific: install ONLY on cylinder #4 or #5.
- Do not bend the line; replace if kinked or scored.
- Clean seats; torque to factory spec; recheck after first heat cycle.
- Run a rail-pressure leak test; inspect for fuel seepage at both ends.
FAQ
WILL THIS FIT MY 2007.5–2018 6.7L CUMMINS RAM?Yes—4935974 is the OE high-pressure line for the #4 or #5 cylinder on 2007.5–2018 Ram 6.7L ISB (verify by VIN/ESN).
WHICH CYLINDERS DOES 4935974 COVER?It’s position-specific for cylinder #4 or #5 only.
DO I NEED NEW SEALS OR WASHERS?No separate seals—these lines use factory flare/seat interfaces. Replace the line if seats are damaged and ensure mating surfaces are clean.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 4935974 built to factory specifications.
WILL THIS FIT 2019+ TRUCKS?Not typically. Applications shown are 2007.5–2018. For newer trucks, confirm by VIN/ESN for the correct part number.
Product Videos
Custom Field
Vehicle Year 2007.5,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018
Vehicle Make DODGE
ENGINE 6.7L
