Product Description
Cummins 3957070 — Genuine Engine Oil Dipstick Tube (Oil Gauge Tube) for ISB 5.9L
MPN: 3957070 | Also Known As: oil gauge tube, dipstick tube
Genuine Cummins replacement dipstick tube that restores accurate oil level readings and a proper seal at the block. Direct-fit for 2003–2007 Ram 5.9L ISB. Pair with OE dipstick 3959009 if needed.
Features & Benefits
- OE geometry for accurate dipstick depth and reading.
- Direct-fit replacement for factory routing and clip points.
- Corrosion-resistant construction to handle road salt and moisture.
- Prevents leaks when properly seated and sealed at the block.
- Backed by Cummins manufacturing standards for durability.
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2003–2007 | Ram 5.9L ISB (24V Common-Rail) | Ram 2500/3500 |
Retailer and catalog listings consistently show 3957070 as the OE dipstick tube for 2003–2007 5.9L Ram applications. We align to this coverage for automotive fitment. :contentReference[oaicite:0]{index=0}
Industrial/Off-Highway: Cummins indicates this tube is used primarily on EPA13-era 6.7L ISB/QSB engines; verify by ESN for industrial or late-model service parts overlap. :contentReference[oaicite:1]{index=1}
Compatibility Notes:
- Automotive default: 2003–2007 5.9L Ram 2500/3500.
- Related dipstick (sold separately): 3959009 (flat-blade style) is commonly paired with this tube for 2003–2007 trucks. :contentReference[oaicite:2]{index=2}
- For 2007.5+ 6.7L trucks, fitment typically differs; confirm by VIN/ESN.
Specifications
- Type: Engine oil dipstick tube (oil gauge tube)
- OE Part Number: 3957070
- Quantity Required: 1 per engine (sold individually)
Often Paired With
- Engine Oil Dipstick: Cummins 3959009 (2003–2007 5.9L)
- Fresh oil & filter: good practice if contamination was present
- Routing hardware/clips: reuse or replace as needed for proper tube support
What’s In The Box
- (1) Genuine Cummins Engine Oil Dipstick Tube (3957070)
- Dipstick and hardware sold separately.
Installation Tips
- Lightly lube the tube end; seat fully in the block and verify seal.
- Route through factory clips/brackets; avoid kinks and abrasion points.
- Insert dipstick and confirm the reading matches service manual capacity after oil change.
FAQ
WILL THIS FIT MY 2003–2007 5.9L CUMMINS RAM?
Yes—3957070 is listed for 2003–2007 Ram 2500/3500 with the 5.9L ISB common-rail. Always confirm by VIN/ESN. :contentReference[oaicite:3]{index=3}
DOES THIS INCLUDE THE DIPSTICK?
No—this listing is the tube only. The matching OE dipstick is Cummins 3959009 (sold separately). :contentReference[oaicite:4]{index=4}
WHAT ABOUT 6.7L APPLICATIONS?
Cummins notes 3957070 is used primarily on EPA13-era 6.7L ISB/QSB engines on the industrial/parts side. For trucks, confirm by VIN/ESN as most 6.7L Rams use different tubes. :contentReference[oaicite:5]{index=5}
HOW DO I KNOW MY TUBE NEEDS REPLACED?
Cracks, corrosion, loose fit at the block, or a bent tube that causes incorrect readings are common reasons to replace.
IS THIS A GENUINE CUMMINS PART?
Yes—OE Cummins 3957070.
