Product Description
The CUMMINS 4089819 OEM UPPER ENGINE GASKET KIT provides every top-end seal required to properly service, refresh, or rebuild the upper engine on your 2003–2007 5.9L ISB Cummins. This is a genuine Cummins kit, engineered specifically for common-rail 5.9L trucks, ensuring perfect fitment, precise sealing, and long-term durability. Whether you're repairing a leaking valve cover, replacing the head gasket, or completing a full top-end overhaul, this premium OE kit delivers unmatched reliability.
What’s Included
This genuine Cummins kit typically includes (contents may vary by ESN):
- OEM multi-layer steel head gasket
- Valve cover gasket
- Intake manifold gaskets
- Exhaust manifold gaskets
- Injector sealing washers / O-rings
- Rocker housing gaskets
- Turbo oil return & oil feed gaskets (application-dependent)
- Various upper engine seals for common-rail 5.9L ISB
Fitment
The Cummins 4089819 Upper Engine Gasket Kit fits:
- 2003–2007 Dodge Ram 2500 5.9L Cummins (ISB common-rail)
- 2003–2007 Dodge Ram 3500 5.9L Cummins (ISB common-rail)
Engine Platform: 5.9L ISB Common Rail
Cylinder Head: 24-Valve
Always verify engine serial number (ESN) before ordering.
Cross-Reference (ID Only)
- Cummins: 4089819 (this kit)
- Cummins Supersession: 4955354 (varies by ESN)
- Mopar Reference: 5086807AA
Related Genuine Cummins Parts (Working Links)
- CUMMINS 3804899 OEM FRONT CRANKSHAFT SEAL – 5.9L/6.7L
- CUMMINS 3920706 EXPANSION PLUG – 5.9L/6.7L
- CUMMINS 3937111 FRONT CRANKSHAFT SEAL KIT – 5.9L
Why Choose Genuine Cummins Gaskets?
- Perfect fitment and sealing for the 5.9L ISB platform.
- Correct materials and thickness—critical for head gasket integrity.
- Long service life with OEM-grade coatings and embossing.
- Designed to withstand diesel boost pressures and high cylinder temps.
Specifications for cummins 4089819
| Specification | Detail |
|---|---|
| Brand | Genuine Cummins |
| Part Number | 4089819 |
| Engine Compatibility | 5.9L ISB Cummins (2003–2007) |
| GTIN | Not published by Cummins |
| UPC | Not published by Cummins |
| Shipping Weight | Approx. 3.0 lbs |
| Shipping Dimensions | 16 in × 12 in × 3 in (approx.) |
| Shipping Method | Standard ground / small parcel |
| Cross Reference | 4955354, 5086807AA (ID only) |
| E-Codes / Emissions | Standard emissions; OEM sealing kit |
| Prop 65 Warning | Yes – This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. www.P65Warnings.ca.gov |
FAQ
IS THIS A GENUINE CUMMINS UPPER ENGINE GASKET KIT?
Yes. This is an authentic Cummins 4089819 gasket kit produced to OEM specifications for 2003–2007 5.9L ISB engines.
DOES THIS KIT INCLUDE A HEAD GASKET?
Yes. This kit typically includes the correct multi-layer steel (MLS) head gasket for 5.9L common-rail engines. Variations may exist by ESN.
IS THIS KIT CORRECT FOR 1998.5–2002 24-VALVE ENGINES?
No. This kit is specifically engineered for the 2003–2007 ISB 5.9L common-rail platform. Older 24-valve and 12-valve engines require different gasket kits.
SHOULD I RESURFACE THE HEAD WHEN USING THIS KIT?
Cummins recommends inspecting for flatness and cracks. Resurfacing is recommended if the head is out of tolerance or previously overheated.
WHAT OTHER PARTS SHOULD I REPLACE WITH THE UPPER ENGINE KIT?
Many owners also replace related seals such as the front crankshaft seal (3804899) and turbo drain plug (3920706) during major service work.
