ISX15 / X15 EGR Exhaust Manifold Hardware & Gasket Kit | Bolt & Spacer (OEM-Style)
The Diesel Power Source® ISX15 / X15 EGR Manifold Hardware & Gasket Kit (Bolt & Spacer) bundles every gasket and fastener your shop needs to install the DPS Stock Replacement ISX15 / X15 Exhaust Manifold on EGR-equipped Cummins ISX15 and X15 engines. One SKU covers the manifold-to-head install, the turbo flange install, and the EGR connection — built for service shops and fleet maintenance teams that want the install kit on the bench before the manifold comes off.
This kit uses the OEM bolt-and-spacer mounting configuration Cummins specifies on the production line. For shops doing warranty work, fleet PM intervals, or stock-style replacement to factory service spec, this is the right kit. If long-haul mileage and extended service intervals are driving the install, the Stud & Nut version is built for that workflow instead.
Pairs with the DPS Stock Replacement ISX15 / X15 EGR Exhaust Manifold (MAN1004 / MAN1008). The kit ships with the manifold-to-head bolts and spacers, the multi-section gasket set, the EGR gasket, the turbo flange gasket, and the turbo flange hardware — the entire fastener and gasket scope of an ISX15 EGR manifold replacement, in one part number on the work order.
Built for the Service Bay Workflow
Most of the cost of an ISX15 manifold replacement isn't the manifold — it's shop time. Tracking down the right gasket bag, the correct bolt length, the correct spacer count, and the EGR gasket as separate line items adds bench time, cart trips, and chances to miss a part on reassembly. This kit was built around that real-world workflow: one SKU on the work order, every fastener and gasket needed, no part-number lookup at 4pm with the truck still on jacks.
Cummins Service Spec Mounting
The bolt-and-spacer mounting style — long flange bolt through the manifold, through a 60mm spacer, threaded into the cylinder head — is the configuration Cummins specifies on the production line and in the OEM service manual. For warranty work, fleet PM, and standard manifold replacements, this matches what the truck was built with.
Multi-Section Gasket Set
The DPS ISX15 manifold uses pressed expansion joints between segments to absorb thermal movement, which protects the cylinder head and head gasket from the warpage stress that destroys factory single-piece manifolds. Each section seals to the head independently, which is why this kit includes a center gasket plus four end gaskets — one for every sealing surface on the assembly.
EGR Gasket Included
EGR-equipped ISX15 and X15 engines route exhaust gas back through a cooler attached to the manifold. The EGR-to-manifold connection needs its own gasket, which is included here so the EGR cooler reattaches cleanly on the same job. No second order, no waiting on shipping with a half-disassembled engine on the bench.
Who This Kit Is For
- Owner-operators and fleet maintenance shops servicing EGR-equipped Cummins ISX15 and X15 engines
- Class 8 trucks — Kenworth, Peterbilt, Freightliner, Mack, Volvo, International, and others running the ISX15 / X15
- Repair and resale shops doing stock-replacement manifold installs to Cummins service specifications
- Fleets that prefer the factory bolt-and-spacer mounting method
- Builders who want all install hardware and gaskets in a single SKU
What's Included
| Qty | Component | Purpose |
|---|---|---|
| 1 | ISX EGR Gasket | Seals EGR connection to manifold |
| 1 | ISX Non-Divided Turbo Flange Gasket | Seals turbo to manifold flange |
| 1 | Turbo Oil Drain Gasket | Seals oil drain line to turbo |
| 1 | ISX Manifold Center Gasket | Seals center manifold section to head |
| 4 | ISX Manifold End Gaskets | Seals end manifold sections to head |
| 4 | M10-1.5 × 20-12-16 Turbo Studs | Mounts turbo to manifold flange |
| 4 | M10-1.5 Turbo Flange Nuts | Pairs with turbo studs |
| 12 | M10-1.5 × 100mm Manifold Flange Bolts | Manifold-to-head mounting |
| 2 | M10-1.5 × 40mm Flange Bolts | End-position manifold mounting |
| 12 | M10-1.5 × 60mm Spacers | Pairs with 100mm flange bolts |
Key Features
- Complete manifold install package — every gasket and fastener needed for the manifold, turbo, and EGR install
- OEM-style bolt-and-spacer mounting — matches Cummins factory service specification
- EGR gasket included — covers EGR-equipped emissions-intact ISX15 and X15 trucks
- Multi-section gasket set — center plus end gaskets sized for the DPS multi-piece manifold design
- Direct fit for the DPS Stock Replacement ISX15 / X15 EGR Manifold
- Single-source convenience — every gasket and fastener in one SKU for shop and fleet efficiency
Benefits
- Eliminates the need to source manifold gaskets, EGR gaskets, turbo studs, and mounting bolts from multiple suppliers
- Reduces shop time per manifold replacement — every part needed is in one box
- Matches Cummins service specifications for stock-replacement work
- Improves long-term sealing across all manifold-to-head sections and turbo flange
Fitment
- Cummins ISX15 and X15 EGR-equipped engines
- Pairs with the Diesel Power Source® Stock Replacement ISX15 / X15 EGR Exhaust Manifold (MAN1004 / MAN1008)
- Class 8 commercial trucks — Kenworth, Peterbilt, Freightliner, Mack, Volvo, International, Western Star
- Fits all DPS multi-section ISX15 / X15 EGR manifolds with the factory-style turbo flange
Note: This kit is for the EGR-equipped ISX15 / X15 stock-replacement manifold. If your engine is non-EGR equipped, see the ISX15 / X15 Non-EGR Manifold Hardware Kit. If you're running the DPS T6 performance manifold for S400 frame turbos, see the T6 hardware kit instead.
Pairs With This Kit
Frequently Asked Questions
This is the OEM-equivalent kit, designed to match how Cummins specifies the install on the production line and in the service manual. For warranty work, fleet PM cycles, and standard manifold replacement, the bolt-and-spacer configuration is what shops are familiar with and what most fleet documentation lists. The stud-and-nut version is available separately for builds where extended mileage and easier future R&R are bigger considerations than spec compliance.r
Manifold replacement on an ISX15 averages 6–10 hours of shop time depending on truck configuration and accessibility. Having all gaskets and fasteners in one part number on the work order shaves real time off the parts-room and bench-prep portion of that estimate, but the actual wrench time is dictated by the engine layout, not the hardware kit.
It fits both. The DPS Stock Replacement EGR manifold (MAN1004 / MAN1008) is designed for both engine families, since they share the same head bolt pattern and EGR-cooler interface. This kit is built for that manifold across both ISX15 and X15 applications.
The gaskets in this kit are designed for the DPS multi-section manifold specifically, including a center gasket and four end gaskets sized to the segmented design. They are not the same single-piece gaskets used on the factory single-piece manifold — those wouldn't seal correctly across the DPS expansion-joint architecture.
