Product Description
The CUMMINS 3800487 OEM LOWER ENGINE GASKET KIT is the genuine bottom-end sealing solution for 1998.5–2002 Ram 2500/3500 5.9L ISB 24-valve (VP44) trucks and non-certified ISB/QSB 5.9 industrial engines when verified by ESN. This kit brings together the oil pan gasket, gear housing and cover gaskets, oil cooler and filter head gaskets, piston cooling nozzle seals, plus front and rear crankshaft seals with sleeves to reseal the lower end the right way, using 100% genuine Cummins components.
Why Choose Genuine Cummins 3800487?
- Direct-fit lower engine gasket kit engineered specifically for VP44-era 5.9L ISB applications.
- Includes the critical front and rear crankshaft seals and installation sleeves to help prevent leaks at the most common failure points.
- Designed to match OE materials, thickness, and profiles for long-term sealing and quiet, leak-free operation.
- Backed by Cummins engineering and CPP Diesel’s application support for Ram truck and industrial users.
- Ideal for in-frame overhauls and full bottom-end reseals where “good enough” aftermarket kits won’t cut it.
Fitment – 5.9L ISB VP44 & ISB/QSB 5.9
Verified Automotive Fitment
- 1998.5–2002 Dodge Ram 2500 – 5.9L ISB 24V (VP44-equipped)
- 1998.5–2002 Dodge Ram 3500 – 5.9L ISB 24V (VP44-equipped)
This kit is the OE lower-end gasket set for VP44-era 5.9L ISB trucks and matches the second-gen 24-valve Ram applications covered by the Cummins catalog.
Industrial / Off-Highway Fitment (ISB/QSB 5.9)
The 3800487 kit is also used on non-certified ISB/QSB 5.9 industrial and off-highway engines. Because there are multiple CPL/ESN-based variants in this family, always verify by engine serial number (ESN) before ordering for industrial or generator applications.
Cross-Reference & Related Cummins Parts
OEM / catalog cross-reference identifiers (ID only):
- Cummins: 3800487 (this kit), 3800833, 3802980
- Interstate-McBee (ID only): M-3800487, M-3800833
- PAI (ID only): 131608, 131726, 131899
- Reviva (ID only): 131899R (Cummins 3800487R based lower kit)
For a complete, all-Cummins reseal and overhaul on your VP44 5.9L, pair this lower kit with these genuine Cummins components on cppdiesel.com:
- CUMMINS 4090035 OEM UPPER ENGINE GASKET KIT – 5.9L 24V (1998.5–2002) – head-up kit with standard-thickness head gasket 3977063.
- CUMMINS 3800784 OEM ENGINE PISTON KIT (.020) – 5.9L ISB (1998.5–2002) – .020" over piston kit for VP44 24-valve builds.
- CUMMINS 4089173 OEM LOWER ENGINE GASKET KIT – RAM 5.9L (2003–2007) – use this instead when working on common-rail 5.9L engines.
- CUMMINS 4089093 OEM ENGINE OIL PAN (KIT) – 5.9L 12V/24V (1994–2002) – OE oil pan that matches the gasket and sealing strategy used with this kit.
What’s Included
Exact contents vary slightly by ESN/CPL; typical contents include:
- Oil pan gasket (multi-piece style as required by application)
- Gear housing and rear cover gaskets
- Oil cooler core gasket and oil filter head gasket
- Pushrod/side cover gasket
- Piston cooling nozzle seals
- Front crankshaft seal with installation sleeve
- Rear crankshaft seal with installation sleeve
- Assorted O-rings, seals, and sealing washers for lower engine interfaces
Install Notes
- Verify VIN/ESN and CPL before ordering to ensure correct kit revision for your engine.
- Thoroughly clean and inspect all sealing surfaces; remove old sealant and corrosion.
- Use the supplied crank seal sleeves and tools for proper seal installation.
- Follow Cummins torque values and sequences from the service manual.
- After first heat cycle, inspect for seepage around the pan rail, covers, and crank seals.
Specifications for cummins 3800487
| Brand | Cummins – Genuine OEM |
| Part Number | 3800487 |
| Product Type | Lower engine gasket kit (bottom-end conversion set) |
| Engine Platform | 5.9L ISB / QSB B-Series Cummins |
| Primary Automotive Fitment | 1998.5–2002 Dodge Ram 2500/3500 5.9L ISB 24V (VP44) |
| Industrial / Off-Highway Use | Non-certified ISB/QSB 5.9 applications – verify by ESN/CPL before ordering. |
| Cross Reference (ID only) | Cummins 3800487, 3800833, 3802980; Interstate-McBee M-3800487, M-3800833; PAI 131608, 131726, 131899; Reviva 131899R (3800487R based kit). |
| UPC | 193807130442 (Reviva/Cummins cross-referenced lower gasket kit UPC; used here for catalog/SEO) |
| GTIN | 193807130442 |
| Shipping Weight | Approx. 3.8 lb (kit boxed, per Cummins catalog data). |
| Package Dimensions | Approx. 39.6" (L) x 15.0" (W) x 1.75" (H). |
| Shipping Method | Small parcel, standard ground; qualifies for CPP Diesel free shipping in the contiguous U.S. |
| E-Codes / Emissions | Not emissions-calibrated; sealing kit only with no direct emissions control function. |
| Country of Origin | Not specified by manufacturer (varies by Cummins production batch). |
| Prop 65 Warning | Yes – this product can expose you to chemicals including compounds in rubber, sealants, and metal alloys which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. |
FAQ
WILL THIS FIT MY 1998.5–2002 5.9L CUMMINS RAM?
Yes. This kit is the OE lower engine gasket set for VP44-equipped 5.9L ISB 24-valve engines in 1998.5–2002 Ram 2500 and 3500 trucks. Always confirm by VIN/ESN for best results, especially on late-build or mixed-use applications.
WHAT EXACTLY IS INCLUDED IN THE 3800487 KIT?
Contents vary slightly by ESN, but typically include the oil pan gasket, gear housing and rear cover gaskets, oil cooler and filter head gaskets, pushrod cover gasket, piston cooling nozzle seals, front and rear crankshaft seals with installation sleeves, and the required O-rings and sealing washers for lower-end interfaces.
IS THIS A GENUINE CUMMINS KIT OR AFTERMARKET?
This is a genuine Cummins 3800487 kit sourced through CPP Diesel. It is not an aftermarket or “will-fit” kit and is built to factory Cummins material and fit specifications for durability and long-term sealing.
DO I ALSO NEED THE UPPER ENGINE GASKET KIT?
If you have the cylinder head or top-end apart, we strongly recommend pairing this lower kit with the CUMMINS 4090035 OEM UPPER ENGINE GASKET KIT – 5.9L 24V (1998.5–2002) for a full engine reseal. Use 3800487 for the bottom end and 4090035 for head-up sealing.
WILL THIS WORK ON A 2003+ 5.9L COMMON-RAIL CUMMINS?
No. Common-rail 5.9L engines use a different lower gasket kit. For 2003–2007 Ram 5.9L common-rail applications, use the CUMMINS 4089173 OEM LOWER ENGINE GASKET KIT – RAM 5.9L (2003–2007) instead.
HOW IMPORTANT IS MATCHING THE KIT TO MY ESN/CPL?
On both truck and industrial applications, matching by ESN/CPL is strongly recommended. B-Series 5.9 engines have running changes in covers, pans, and sealing hardware. Using the correct ESN ensures you get the right gaskets, seals, and hardware for your specific engine build. If you are unsure, contact CPP Diesel with your VIN or engine serial number before ordering.
