Product Description
Genuine Cummins
Cummins 3943626 — Valve Crosshead / Rocker Arm Valve Bridge
MPN: 3943626 | Also Known As: rocker arm valve bridge, crosshead | Cross-Ref: 3941014
Why This Part
- ✓ OE crosshead that transfers rocker motion to paired valves for accurate lift.
- ✓ Direct-fit for 24-valve ISB platforms (see fitment below).
- ✓ Hardened contact faces for long life and quiet operation.
- ✓ Sold individually—12 required per engine.
OE Fit Valvetrain 12 Per Engine
Quick Specs
| Type | Valve crosshead (rocker arm valve bridge) |
|---|---|
| OE Part # | 3943626 (cross-ref: 3941014) |
| Qty Required | 12 per engine (sold individually) |
| Platform | ISB 5.9L/6.7L 24-valve (see verified fitment) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1998.5–2002 | Ram 5.9L ISB 24V (VP44) | Ram 2500/3500 |
| 2003–2007 | Ram 5.9L ISB 24V (Common-Rail) | Ram 2500/3500 |
| 2007.5–2018 | Ram 6.7L ISB 24V (Common-Rail) | Ram 2500/3500 |
Industrial/Off-Highway: Used on ISB/QSB 5.9/6.7 and seen on some ISC 8.3 applications—verify by ESN before ordering.
Often Paired With
- Full set of 12 crossheads (order qty 12 for one engine)
- Rocker arm assemblies & adjusting screw/nut (inspect for wear)
- Valve stem caps/keepers if damaged or replaced during service
What’s In The Box
- (1) Genuine Cummins Valve Crosshead / Valve Bridge (3943626)
- Other valvetrain hardware sold separately.
Install Tips
- Replace in matched sets where wear is evident; ensure each bridge sits squarely on both valve stems.
- Lubricate contact faces during assembly; set valve lash to factory spec after install and again after initial heat cycle.
- Follow Cummins service procedures; verify by Engine Serial Number (ESN).
FAQ
HOW MANY OF THESE DO I NEED?There are 12 bridges on the 24-valve ISB 5.9/6.7. This item is sold individually—order quantity 12 for a full set.
WILL THIS FIT BOTH 5.9L AND 6.7L?Yes—fits 1998.5–2002 5.9L (VP44), 2003–2007 5.9L (common-rail), and 2007.5–2018 6.7L applications (see table above; verify by VIN/ESN).
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins crosshead (3943626) with proper geometry and surface hardening.
WHAT’S THE CROSS-REFERENCE?Common cross-reference is 3941014; use 3943626 when ordering this genuine Cummins bridge.
SHOULD I REPLACE ROCKER ARMS AT THE SAME TIME?Inspect rocker tips and adjusters. Replace any worn parts to prevent accelerated wear of the new bridges.
Product Videos
Custom Field
Vehicle Year 1998.5 +
Vehicle Make DODGE
ENGINE 5.9L / 6.7L CUMMINS
