24V Cummins Exhaust Manifold Hardware & Gasket Upgrade Kit | 1998.5–2002 5.9L
The Diesel Power Source® 24V Cummins Manifold Hardware & Gasket Upgrade Kit is a complete add-on package designed to fully install the DPS T3 24-Valve Exhaust Manifold on 1998.5–2002 5.9L Cummins engines. It includes every gasket and fastener needed for both the manifold-to-head install and the T3 turbo flange install — sourced together so you don't have to chase parts mid-build.
This kit replaces the standard flange bolts found in the manifold's base hardware kit with a full stud-and-nut configuration, the preferred mounting method for high-EGT applications. Multi-Layer Steel (MLS) gaskets resist burnout, blow-through, and warping far better than single-layer alternatives, and both divided and non-divided T3 turbo gaskets are included so the kit fits either housing style.
Designed as the recommended upgrade to the DPS T3 24V Exhaust Manifold. The base kit included with the manifold ships with standard flange bolts and the line relocation bracket. This upgrade adds the gaskets, stud-and-nut hardware, and turbo install components needed to complete a full T3 manifold and turbo install in one purchase.
Why Upgrade From the Base Hardware Kit
The base hardware kit shipped with the DPS T3 24V manifold gets the manifold mounted to the head — but it doesn't include MLS gaskets, turbo flange hardware, or the gaskets required to bolt your turbo on. This upgrade kit adds all of those components in a single SKU.
Stud-and-Nut Mounting
Studs provide more consistent clamping load than bolts and resist fastener fatigue from repeated thermal cycling — critical for an exhaust manifold that sees hundreds of heat cycles a year. Studs also make future manifold removal far easier; you back off nuts instead of breaking loose corroded bolt threads in the head.
Multi-Layer Steel Gaskets
MLS gaskets use stacked stainless layers to seal the variable surfaces between the manifold and head. They handle higher boost, higher EGTs, and more aggressive tuning than single-layer gaskets without burning through or warping.
Both T3 Gasket Styles Included
Whether your turbo runs a divided or a non-divided T3 housing, the correct gasket is in the box. No second order, no waiting on shipping when the truck is mid-build.
Who This Kit Is For
- Owners of 1998.5–2002 Dodge Ram 2500 and 3500 trucks running the 5.9L 24-Valve Cummins (VP44 era)
- Second-gen Dodge Ram builders installing the DPS T3 24V Exhaust Manifold
- Off-road, marine, agricultural, and industrial 24V 5.9L builds running a T3-flange turbocharger
- Builders who want all install hardware and gaskets in a single purchase
What's Included
| Qty | Component | Purpose |
|---|---|---|
| 6 | Multi-Layer Steel Manifold-to-Head Gaskets | Seals manifold to cylinder head |
| 1 | T3 Divided Turbo Flange Gasket | For divided T3 housings |
| 1 | T3 Non-Divided Turbo Flange Gasket | For non-divided T3 housings |
| 1 | Turbo Oil Drain Gasket | Seals oil drain line to turbo |
| 12 | M10-1.5 × 20-12-16 Manifold Studs | Replaces base-kit flange bolts |
| 12 | M10-1.5 Manifold Flange Nuts | Pairs with manifold studs |
| 2 | M10-1.5 × 20-12-16 Turbo Studs | Mounts turbo to manifold |
| 2 | M10-1.5 × 45mm Flange Bolts | Turbo mounting hardware |
| 4 | M10-1.5 Turbo Flange Nuts | Pairs with turbo studs |
Key Features
- Full stud-and-nut manifold mounting — replaces the base kit's standard flange bolts
- Multi-Layer Steel manifold gaskets — built for high boost and high EGTs
- Both divided and non-divided T3 gaskets — fits either turbo housing style
- Complete turbo mounting hardware — studs, bolts, nuts, oil drain gasket
- Direct fit for the DPS T3 24V Exhaust Manifold — no machining or modifications
- Single-source convenience — every gasket and fastener for the install in one SKU
Benefits
- Reduces manifold-bolt loosening and fastener fatigue from repeated heat cycling
- Improves long-term sealing under boost, towing, and performance tuning
- Makes future manifold removal easier — back off nuts instead of fighting seized bolts
- Eliminates the need to source MLS gaskets and stud kits from multiple suppliers
- Covers both T3 turbo housing styles in one kit
Fitment
- 1998.5–2002 Dodge Ram 2500 / 3500 — 5.9L 24-Valve Cummins (ISB 5.9 24V, VP44)
- Pairs with the Diesel Power Source® T3 24V Exhaust Manifold
- Compatible with any T3-flange turbocharger — divided or non-divided housing
- Off-road, marine, agricultural, and industrial 24V 5.9L applications
Note: This kit is the upgrade hardware and gasket package. It does not include the line relocation bracket, which ships with the DPS T3 24V Exhaust Manifold base kit.
