Product Description
CUMMINS 3928759 OEM TAPPET COVER GROMMET SEAL – RAM 5.9L (1998.5–2002)
Keep your 1998.5–2002 Ram 5.9L Cummins ISB leak-free with the genuine Cummins 3928759 tappet cover grommet seal. This OE rubber grommet fits the tappet (pushrod) cover bolts on BS3 5.9 B engines and restores a tight, oil-resistant seal so you don’t have seepage down the side of the block or onto the exhaust. Designed by Cummins for long-term durability, it’s the right choice when you’re resealing the tappet cover or installing a fresh lower engine gasket kit.
Key Features & Benefits
- Genuine Cummins part #3928759 – not an aftermarket copy, built to OE material and dimensional specs.
- Direct-fit tappet cover bolt grommet for 5.9L ISB 24-valve Ram applications (VP44 trucks).
- Six (6) required per engine – sold individually so you can replace a single damaged seal or do a complete refresh.
- Oil- and heat-resistant elastomer helps prevent weeping around the tappet cover bolts over high-mileage service.
- Engineered for BS3 5.9 B engines, supporting both on-highway and industrial variants—verify by ESN for non-automotive.
- Perfect match to Cummins 3284623 tappet/push rod cover gasket when resealing the entire side cover.
Fitment
- Engine: Cummins 5.9L ISB 24-valve (VP44) BS3 5.9 B engine.
- Automotive Applications: 1998.5–2002 Dodge Ram 2500/3500 with 5.9L Cummins ISB (24V).
- Location: Tappet / pushrod cover bolt grommet seals (side of block).
- Quantity Required: 6 grommets per engine (one per tappet cover bolt).
- Industrial / Off-Highway: Used primarily on BS3 5.9L B engines – always confirm by engine serial number (ESN) for non-Ram applications.
Cross-Reference & Related Genuine Cummins Parts (CPP Diesel)
Build a complete, all-OEM Cummins seal solution using these related parts from CPP Diesel:
- CUMMINS 3284623 OEM TAPPET / PUSH ROD COVER GASKET – 5.9L (1989–2002) – main side cover gasket; pairs with 3928759 grommets when resealing the tappet cover.
- CUMMINS 3800487 OEM LOWER ENGINE GASKET KIT – RAM 5.9L (1998.5–2002) – comprehensive bottom-end gasket kit that includes critical seals for VP44-era ISB engines.
- CUMMINS 3977063 OEM CYLINDER HEAD GASKET (STANDARD THICKNESS) – RAM 5.9L 24V (1998.5–2002) – standard-thickness OE head gasket for the same VP44 24V platforms.
- CUMMINS 3969988 OEM INTAKE HEATER GRID GASKET – 5.9L CUMMINS (1989–2007) – ideal add-on when you’re chasing boost or oil leaks on 5.9L air-intake components.
Installation Notes
- Clean the tappet cover, bolt shoulders, and gasket surfaces thoroughly before installation.
- Install each 3928759 grommet with the correct orientation; do not re-use hardened or cracked grommets.
- Use the proper torque spec on tappet cover bolts per Cummins/Ram service information.
- For best results, reseal with a new Cummins 3284623 tappet cover gasket at the same time.
Frequently Asked Questions
IS CUMMINS 3928759 A GENUINE OEM PART OR AFTERMARKET?
This listing is for a genuine Cummins OEM 3928759 grommet seal, sourced through Cummins distribution channels. It matches the material, hardness, and dimensions used by Cummins on BS3 5.9 B/ISB applications.
HOW MANY 3928759 GROMMETS DOES MY 5.9L CUMMINS REQUIRE?
VP44-era 5.9L ISB engines use six (6) tappet cover bolts, and you should install a new 3928759 grommet on each bolt—so plan for a quantity of six per engine.
WILL THIS FIT ALL 5.9L CUMMINS ENGINES?
3928759 is used primarily on BS3 5.9 B engines, including 1998.5–2002 Ram 5.9L ISB 24V trucks. Other 5.9L applications may use different hardware, so always confirm by VIN or engine serial number (ESN) if you’re working on a non-Ram or industrial engine.
SHOULD I REPLACE THE TAPPET COVER GASKET AT THE SAME TIME?
Yes. Anytime you have the tappet cover off, it’s smart to replace the Cummins 3284623 tappet / push rod cover gasket along with all six 3928759 grommets to ensure a complete, long-term seal. You can get the correct OE gasket here at CPP Diesel: CUMMINS 3284623 OEM TAPPET / PUSH ROD COVER GASKET – 5.9L (1989–2002) .
DOES THIS PART CARRY ANY PROP 65 WARNINGS?
Many Cummins sealing components, including grommets and seals, may expose you to chemicals such as toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Specifications for cummins 3928759
| Brand | Cummins |
| Part Number | 3928759 |
| Product Type | Tappet / pushrod cover bolt grommet seal |
| Engine Compatibility | BS3 5.9 B / 5.9L ISB 24V; 1998.5–2002 Dodge Ram 2500/3500 5.9L Cummins (verify by ESN for non-automotive applications). |
| Automotive Year Range | 1998.5–2002 Ram 5.9L ISB 24V (VP44) |
| Qty Required per Engine | 6 (sold individually) |
| Material | Oil- and heat-resistant elastomer (OE Cummins spec) |
| UPC | Not specified by Cummins (no public UPC listed) |
| GTIN | Not specified (standard GTIN not published in available data) |
| Cross Reference | Commonly listed as 3928759, 3928759CUM in industry catalogs; pairs with Cummins 3284623 tappet cover gasket for complete reseal. |
| E-Codes | Not applicable / not specified |
| Unit Count | Each (some distributors package in sets of 8; CPP sells individually) |
| Approximate Product Dimensions | Approx. 0.75" x 0.75" x 0.125" (seal dimensions as noted in distributor data; actual rubber profile is compact). |
| Approximate Product Weight | ~0.02 lb per grommet. |
| Shipping Method | Standard small parcel (ships safely in a padded mailer or small box with other Cummins seals/gaskets). |
| Hazard Classification | Non-hazardous for transport; chemical exposure may trigger California Proposition 65 warning (toluene/benzene). |
| Country of Origin | Not specified (genuine Cummins-branded component) |
| Prop 65 Warning | This product can expose you to chemicals including toluene and benzene, 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. |
