Product Description
Cummins 3905799 — Oil Gauge Tube / Dipstick Tube
MPN: 3905799 | Also Known As: dipstick tube, oil level gauge tube
Why This Part
- ✓ OE tube for accurate oil level readings and proper dipstick routing.
- ✓ Direct-fit for 1989–1998 Ram 5.9L Cummins (12-valve). :contentReference[oaicite:0]{index=0}
- ✓ Durable factory construction to resist corrosion and vibration.
- ✓ Restores reliable service checks after tube damage or loss.
Quick Specs
| Type | Oil gauge tube / dipstick tube |
|---|---|
| OE Part # | 3905799 |
| Qty Required | 1 per engine (sold individually) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1989–1998 | 5.9L Cummins (12-Valve) | Ram 2500/3500 |
Industrial/Off-Highway: Common on B3.9/B5.9/6B5.9 and C8.3 families; verify by ESN for non-automotive equipment. :contentReference[oaicite:1]{index=1}
Often Paired With
- Matching Dipstick: varies by year; verify by VIN/ESN. (Common pairing seen in kits: dipstick 3968986.) :contentReference[oaicite:2]{index=2}
- Tube grommet/seal at block (inspect/replace if brittle)
- Fresh oil & filter after any oil system service
What’s In The Box
- (1) Genuine Cummins Oil Gauge Tube (3905799)
- Dipstick and grommet sold separately (see “Often Paired With”).
Install Tips
- Route the tube carefully to avoid contact with exhaust/turbine housing.
- Seat the tube fully; ensure the dipstick handle seals and reads correctly.
- After install, warm engine, park level, and confirm oil level per service manual.
FAQ
WILL THIS FIT MY 1989–1998 5.9L CUMMINS RAM?Yes—3905799 is the OE oil gauge (dipstick) tube for 1989–1998 12-valve 5.9L Ram 2500/3500. Verify by VIN/ESN if components have been changed. :contentReference[oaicite:3]{index=3}
DOES THIS INCLUDE THE DIPSTICK?No—the dipstick is separate and varies by year. Many kits pair this tube with dipstick 3968986; verify your application. :contentReference[oaicite:4]{index=4}
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3905799 built to factory specifications for fit and durability.
WILL THIS WORK ON INDUSTRIAL B-SERIES ENGINES?Frequently used across B3.9/B5.9/6B5.9 and C8.3 families, but industrial fitment should always be confirmed by ESN. :contentReference[oaicite:5]{index=5}
HOW DO I KNOW MY TUBE NEEDS REPLACED?Rust, leaks, broken mounting points, or inaccurate readings after service are common signs the tube should be replaced.
