Product Description
MAHLE MS19402 intake manifold gasket set restores factory-tight sealing on 2001–2005 GM 6.6L Duramax LB7/LLY engines. OE-style molded-rubber gaskets maintain clamp load across heat cycles to help prevent unmetered air leaks, rough idle, and soot tracking—ideal for stock refreshes, tow rigs, and work trucks.
Fitment
- 2001–2004 LB7 6.6L Duramax – Chevrolet Silverado/GMC Sierra 2500HD & 3500
- 2004.5–2005 LLY 6.6L Duramax – Chevrolet Silverado/GMC Sierra 2500HD & 3500
- Direct-fit replacement for the intake manifold-to-cylinder head seals; hardware not included.
Cross-Reference / OE Numbers
- GM / ACDelco: 97251963
- Fel-Pro: MS 96541
Related MAHLE Items (Internal Links)
- MAHLE MS19398 Exhaust Manifold Gasket Set – 2001–2016 LB7–LML
- MAHLE MS19403 Intake Manifold Gasket – 2006–2010 LBZ/LMM
- MAHLE MIS19403 Intake Manifold Installation Kit – 2006–2007 LLY/LBZ
- MAHLE F31903 Exhaust Manifold to Up-Pipe Gasket – 2001–2016 LB7–LML
- MAHLE OS32284 Oil Pan Gasket – 2001–2010 LB7/LLY/LBZ/LMM
Why MAHLE
- OE-style molded-rubber on carrier for consistent sealing
- Direct-fit geometry to reduce install time and rework
- Proven durability in high-mileage and heavy-use fleets
Installation Notes
- Clean mating surfaces thoroughly; inspect runners and Y-bridge for warp
- Install dry; torque per GM service manual in sequence
- Verify PCV and boost tube connections during reassembly
FAQ
Will MS19402 fit my LB7 or LLY?
Yes—MS19402 is specified for 2001–2005 LB7 and LLY 6.6L Duramax applications.
Does the kit include bolts or RTV?
No—this listing is for the intake manifold gasket set only. Reuse or replace hardware as needed and follow the GM manual for any RTV locations.
What’s the UPC/GTIN for MS19402?
UPC (GTIN-12): 027067721129.
Specifications for Mahle MS19402
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | MS19402 |
| UPC / GTIN | 027067721129 |
| Shipping Info | Ships from CPP Diesel; shipping calculated at checkout. Typical pkg: approx. 3" W × 3" H × 13" L (gasket set). |
| Country of Origin | Not specified |
| Prop 65 | This product can expose you to chemicals including lead and lead compounds, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov. |
