Product Description
Genuine Cummins
Cummins 3802234 — Piston Ring Set (.040" Over / 1.00 mm), 1 Cylinder Set
MPN: 3802234 | Also Known As: oversize piston rings, .040" ring set | Cross-Refs: 3802054, 3802423
Why This Part
- ✓ OE ring pack dimensions and materials for proper seal and oil control.
- ✓ .040" (1.00 mm) oversize to match bored/honed cylinders.
- ✓ 1 cylinder set—order 6 sets per engine for 5.9L inline-6.
- ✓ Restores compression, reduces blow-by, and stabilizes oil consumption.
OE Spec .040" / 1.00 mm 1 Cyl. Set
Quick Specs
| Type | Piston Ring Set (compression & oil rings) |
|---|---|
| Oversize | .040" over (1.00 mm) |
| Coverage | 1 cylinder set — order 6 for full engine |
| OE Part # | 3802234 (cross: 3802054, 3802423) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 2003–2007 | Ram 5.9L ISB (24V Common-Rail) — .040" over build | Ram 2500/3500 |
Notes: This .040" set is commonly used on 2003–2007 5.9L rebuilds. It is also used across B-Series/industrial variants (4B/6B/ISBe) — always verify by ESN and piston style before ordering.
Often Paired With
- .040" over pistons for 5.9L ISB (match to your piston design)
- Ring compressor & ring filer (set and check end-gaps)
- Torque-plate hone/boring and full gasket set
What’s In The Box
- (1) Cummins Piston Ring Set — .040" (1.00 mm) oversize — 1 cylinder set
Install Tips
- Confirm piston/ring compatibility, measure bores, and file-fit end-gaps per spec.
- Stagger ring end positions; lubricate lightly during installation.
- Break-in with appropriate oil and procedure to seat rings properly.
FAQ
IS THIS A FULL ENGINE SET OR PER-CYLINDER?Per-cylinder. Order 6 sets for a complete 5.9L engine (one set per piston).
WHAT OVERSIZE IS 3802234?.040" over (1.00 mm). Ensure your block is bored/honed to the correct oversize.
WILL THIS FIT 6.7L ENGINES?No. This listing targets 5.9L ISB builds; 6.7L uses different ring sets. Verify by ESN.
IS THIS A GENUINE CUMMINS PART?Yes—3802234 is a Cummins ring set; cross references include 3802054 and 3802423.
DO I NEED TO FILE-FIT THE RINGS?Yes—always measure and file-fit end-gaps to your build and usage per service manual.
