Product Description
CUMMINS 3930277 OEM HYDRAULIC PUMP (POWER STEERING) – RAM 5.9L 12-VALVE (1994–1998)
Restore confident, factory steering feel on your 2nd Gen Dodge Cummins with a genuine Cummins 3930277 hydraulic power steering pump. This OEM pump is built to Cummins specifications for 1994–1998 Ram 2500/3500 5.9L 12-valve trucks and selected Euro II B industrial B-series engines, delivering the correct flow and pressure for quiet, consistent steering assist.
Why Choose Genuine Cummins 3930277?
- OEM-calibrated flow and pressure for proper steering effort and assist.
- Direct-fit replacement pump engineered specifically for 5.9L 12-valve Ram 2500/3500 applications.
- Quieter operation and smoother feel compared to worn or low-quality reman pumps.
- Built to Cummins durability standards for long service life when used with clean fluid and healthy hoses/gear.
- Supports both vacuum-brake and hydroboost configurations when matched to the correct OEM plumbing.
Fitment
Primary Automotive Applications:
| Year | Engine | Chassis | Notes |
|---|---|---|---|
| 1994–1998 | 5.9L Cummins 12-Valve (P7100) | Dodge Ram 2500/3500 | Factory-style power steering / hydraulic pump |
Industrial / Off-Highway: Cummins lists 3930277 as a hydraulic pump used on certain Euro II B-series and other industrial engines. Always verify by Engine Serial Number (ESN) before using this pump in non-automotive applications.
Model-Year Split: This part covers 1994–1998 12-valve trucks. For 1998.5–2002 24-valve VP44 trucks, use the later OEM pump: CUMMINS 4919809 OEM HYDRAULIC PUMP (POWER STEERING) – RAM 5.9L 24V (1998.5–2002) .
Features & Benefits
- Direct OE replacement – no generic brackets or “universal” fittings required.
- Correct pressure and flow to keep steering effort consistent during parking, towing, and highway cruising.
- Designed for Euro II B B-series engines and 2nd Gen Dodge applications for proven reliability.
- Factory-style ports and mounting for easier installation and reduced downtime.
What’s Included
- (1) Genuine Cummins hydraulic pump – part number 3930277
- Core components pre-assembled and tested from the factory
- Reservoir, hoses, pulley, and mounting hardware are not included and are reused or replaced separately as needed.
Installation & Service Tips
- Perform a complete power steering system flush to remove contaminated fluid and debris before installing the new pump.
- Inspect and replace return/pressure hoses if cracked, leaking, or internally deteriorated.
- Fill with the correct power steering fluid per OEM service information.
- Bleed the system carefully to remove air and prevent pump whine or cavitation.
- Check the steering gearbox for excessive play or leaks; a failing box can shorten pump life.
Cross-Reference & Related Cummins Parts (CPP Diesel)
Pair this pump with other genuine Cummins components for a complete, OEM-correct repair on your 12-valve Ram:
- Alternate pump for 24V trucks: CUMMINS 4919809 OEM HYDRAULIC PUMP (POWER STEERING) – RAM 5.9L 24V (1998.5–2002)
- Fuel system hardware: CUMMINS 3914284 OEM LIFT PUMP SPACER PLATE – 12-VALVE 5.9L (1994–1998)
- P7100 pump gear nut: CUMMINS 3920921 OEM P7100 INJECTION PUMP GEAR NUT – 5.9L 12-VALVE (1994–1998)
- P7100 pump lock washer: CUMMINS 3920922 OEM P7100 INJECTION PUMP LOCK WASHER – RAM 5.9L 12-VALVE (1994–1998)
Specifications for cummins 3930277
| Attribute | Value |
|---|---|
| Brand | Cummins Genuine Parts |
| Part Number | 3930277 |
| Application | Hydraulic / power steering pump for 5.9L 12-valve Dodge Ram 2500/3500 and selected Euro II B-series engines |
| UPC | Not specified by manufacturer |
| GTIN | Not specified by manufacturer |
| Shipping Weight | Approx. 9.8 lb (4.5 kg) |
| Package Dimensions | Approx. 18 cm x 20 cm x 25 cm (manufacturer packaging) |
| Shipping Method | Ground service, typically ships free from CPP Diesel (continental US) |
| Cross Reference | Cummins 4919809 (related hydraulic pump for 1998.5–2002 24V applications – different part, see separate listing) |
| E-Codes / Emissions | Used on Euro II B-series engines; verify ESN and emissions family via Cummins service information |
| Prop 65 Warning | WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. |
FAQ
Will this Cummins 3930277 pump fit my 1994–1998 Ram 5.9L 12-valve?Yes. Cummins 3930277 is the OEM-style hydraulic (power steering) pump used on most 1994–1998 Dodge Ram 2500/3500 trucks with the 5.9L 12-valve engine. Always confirm by VIN or engine serial number if your truck has been heavily modified or uses non-standard parts.
What is the difference between 3930277 and 4919809?
Both are genuine Cummins hydraulic pumps, but they serve different applications. Part 3930277 fits 1994–1998 5.9L 12-valve Ram trucks and certain Euro II B engines, while Cummins 4919809 is typically used on 1998.5–2002 24-valve VP44 trucks and related B-series applications.
Is this a genuine Cummins pump or a remanufactured/aftermarket unit?
This listing is for a genuine new Cummins OEM pump, not a generic or off-brand remanufactured unit. You get Cummins-level quality, design, and durability backed by their engineering standards.
Does this pump come with a reservoir, pulley, or mounting bracket?
No. The Cummins 3930277 pump is supplied as the core hydraulic pump assembly. Reservoirs, pulleys, brackets, and hoses are reused from your original system or purchased separately if damaged or corroded.
What should I do to prevent pump noise or premature failure after installation?
Flush the system thoroughly, install new fluid, replace any leaking or collapsed hoses, and bleed all air from the system before driving. Inspect the steering gearbox for internal wear or binding, as a failing box can overload a new pump and shorten its life.
