Product Description
CUMMINS 3284377 OEM VALVE PUSH ROD – 5.9L 12-VALVE & 3.9L 4BT
The Cummins 3284377 OEM valve push rod is the factory-correct B-Series pushrod for 5.9L 12-valve (6BT) and many 3.9L 4BT applications. If you’re freshening up a high-mileage engine, replacing bent pushrods, or doing a full top-end refresh, this genuine Cummins piece restores valvetrain geometry, durability, and reliability the way the factory intended.
Unlike cheap aftermarket copies, this genuine Cummins push rod is built with the correct material, heat treatment, and tip hardness so it can survive valve float, heavy towing, and higher cylinder pressures from mild performance upgrades while still delivering OE-level quiet operation and long service life.
Key Features
- Genuine Cummins 3284377 OEM valve push rod (intake or exhaust)
- Direct-fit for B-Series 5.9L 12-valve (1989–1998) and many 3.9L 4BT engines
- Hardened steel construction with OE cup/ball ends for proper lifter & rocker contact
- Stock length and geometry for accurate valve timing and lift
- Sold individually – order the exact quantity needed (12 for 6BT, 8 for 4BT)
Verified Fitment
Automotive (Dodge/Ram):
- 1989–1993 Dodge Ram 2500 / 3500 – 5.9L Cummins 12-valve (6BT, VE pump)
- 1994–1998 Dodge Ram 2500 / 3500 – 5.9L Cummins 12-valve (6BT, P7100)
Industrial / Off-Highway / Swaps (B-Series):
- Common on 3.9L 4BT and other B-Series equipment engines
- Also used in many 4B3.9 / 6B5.9 / ISB / ISD / QSB applications (verify by ESN)
Because Cummins has used this push rod across multiple B-Series variations, always verify by Engine Serial Number (ESN) before ordering, especially for industrial or swap applications.
Cross-Reference (ID Only)
This Cummins 3284377 push rod is commonly cross-referenced to the following Cummins IDs (engineering & superseded numbers only, not separate products on our site):
- 3901898
- 3904364
- 3904679
- 3923262
Related Genuine Cummins Valvetrain Parts at CPP Diesel
For a complete B-Series top-end refresh using genuine Cummins components, pair this push rod with these matching Cummins parts on cppdiesel.com:
- CUMMINS 3931623 OEM VALVE TAPPET (LIFTER) – 6BT/4BT 5.9L/3.9L (1989–1998)
- CUMMINS 3920868 OEM EXHAUST VALVE – 5.9L 12-VALVE (1989–1998) / 4BT & 6BT
- CUMMINS 3802356 OEM EXHAUST VALVE – RAM 5.9L 12-VALVE (1989–1998) | 4BT/6BT B-SERIES
- CUMMINS 3920867 OEM INTAKE VALVE – 5.9L 12-VALVE (1989–1998)
- CUMMINS 3928404 OEM VALVE COVER – 5.9L 12-VALVE (1989–1998)
What’s In The Box
- (1) Genuine Cummins 3284377 valve push rod
Installation Notes
- Inspect every push rod for straightness and tip wear; replace as a set if multiple are damaged.
- Make sure cup and ball ends are fully seated in the lifter and rocker sockets before torqueing.
- Set valve lash to factory spec and re-check after the first heat cycle.
FAQ
HOW MANY PUSH RODS DOES MY ENGINE USE?A 5.9L 12-valve (6BT) uses 12 push rods. A 3.9L 4BT 2-valve engine uses 8 push rods. This part is sold individually, so order the quantity needed for your specific engine.
WILL THIS FIT MY 1989–1998 DODGE RAM 5.9L 12-VALVE?
Yes. Cummins 3284377 is the OE push rod used on 1989–1998 Dodge/Ram 2500 and 3500 with the 5.9L 12-valve Cummins. We still recommend verifying by VIN or ESN for fleet or mixed-engine trucks.
IS THIS PUSH ROD COMPATIBLE WITH 4BT APPLICATIONS?
In most cases, yes. This push rod is widely used in 3.9L 4BT B-Series engines in industrial, equipment, and swap applications. Because there are multiple 4BT configurations, always confirm fitment by Engine Serial Number (ESN).
IS THIS A GENUINE CUMMINS PART OR AFTERMARKET?
This is a genuine Cummins 3284377 OEM push rod, sourced through CPP Diesel. It is not an offshore or private-label copy and meets Cummins’ original specifications for material, hardness, and geometry.
WHAT OTHER PARTS SHOULD I REPLACE WITH NEW PUSH RODS?
When replacing push rods, it’s smart to inspect and replace other wear items in the valvetrain:
- CUMMINS 3931623 OEM VALVE TAPPET (LIFTER)
- Exhaust and intake valves for your 12-valve (see Cummins 3920868, 3802356, and 3920867 above)
- Valve cover gaskets and related hardware when the cover is removed
Specifications for cummins 3284377
| Attribute | Value |
|---|---|
| Brand | Cummins (Genuine OEM) |
| Part Number | 3284377 |
| Part Type | Valve Push Rod (intake/exhaust) |
| Engine Family | Cummins B-Series: 4B3.9, 6B5.9, ISB, ISD, QSB (verify by ESN) |
| Automotive Fitment | 1989–1998 Dodge/Ram 2500 & 3500 with 5.9L 12-valve Cummins (6BT) |
| Industrial / 4BT Fitment | Common on 3.9L 4BT B-Series engines in equipment, industrial, and swap applications (verify by ESN) |
| Quantity Required | 12 per 5.9L 6-cylinder 12-valve, 8 per 3.9L 4-cylinder 2-valve (sold individually) |
| Material | Hardened steel push rod with OE-style ends |
| Cross Reference (Cummins IDs) | 3901898, 3904364, 3904679, 3923262 (engineering / superseded numbers) |
| UPC | Not specified by Cummins (no retail UPC listed) |
| GTIN / EAN | Not specified by Cummins |
| E-Codes / Emissions | Not specifically codified; used across B-Series 5.9L & 3.9L applications – verify by ESN |
| Approx. Unit Weight | ~0.26 lb (0.12 kg) per push rod |
| Package Dimensions (CPP Diesel) | Approx. 12.00" L × 4.00" W × 4.00" H (shipping carton) |
| Shipping Method | Standard ground shipping; calculated at checkout |
| Country of Origin | Country of origin varies by batch – genuine Cummins supply |
| Prop 65 | Warning: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
