Product Description
Genuine Cummins
Cummins 3975628 — Engine Block Heater Element
MPN: 3975628 | Also Known As: engine heater, block heater element | Notes: Element only (power cord sold separately)
Why This Part
- ✓ OE block heater element for reliable cold-weather starts.
- ✓ Direct-fit for Ram 5.9L/6.7L applications (see fitment below).
- ✓ Helps reduce cold-start wear and speeds warm-up to operating temp.
- ✓ Genuine Cummins quality and durability.
OE Fit Stock Replacement Element Only
Quick Specs
| Type | Engine block heater element |
|---|---|
| OE Part # | 3975628 |
| Quantity | 1 per engine (sold individually) |
| Cord | Sold separately; see “Often Paired With” |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1998.5–2007 | Ram 5.9L ISB (24V) | Ram 2500/3500 |
| 2007.5–2021 | Ram 6.7L ISB (24V) | Ram 2500/3500 |
Industrial/Off-Highway: Used across multiple B-Series ISB/QSB applications; verify by ESN for exact coverage.
Often Paired With
- Block heater power cord (element-to-AC): common cords include 3923050 and 3916127 (verify by VIN/ESN).
- Fresh coolant if you drain the system during service.
- Cold-weather fuel additive for winter preparedness.
What’s In The Box
- (1) Genuine Cummins Engine Block Heater Element (3975628)
- Power cord sold separately (see “Often Paired With”).
Install Tips
- Element installs in the block; disconnect battery and drain coolant as needed.
- Clean mating surfaces; torque per factory spec; route the cord away from heat/moving parts.
- Refill coolant, bleed air, and check for leaks. Test cord function before cold weather hits.
FAQ
WILL THIS FIT MY DODGE/RAM 5.9L OR 6.7L CUMMINS?Yes—3975628 is listed for 1998.5–2007 5.9L and 2007.5–2021 6.7L Ram 2500/3500 applications. Always verify by VIN/ESN.
DOES THIS INCLUDE THE POWER CORD?No—this is the element only. Common cord P/Ns include 3923050 and 3916127 (verify for your year).
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3975628 for proper fit and dependable cold-start performance.
CAN I USE THIS ON INDUSTRIAL ISB/QSB ENGINES?Often yes, but industrial fitment varies by variant—confirm by Engine Serial Number (ESN) before ordering.
WHAT ELSE SHOULD I REPLACE DURING INSTALL?Inspect the cord and routing clips; replace brittle components. Refresh coolant if drained, and verify heater function.
Product Videos
Custom Field
Vehicle Year 1998.5-2007
Vehicle Make DODGE
ENGINE 5.9L CUMMINS
