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PPE 149000105 Firewall Insulator - Black
PART#
149000105 | SKU PPE149000105
★★★★★
Vehicle Fitment For:
2001-2007 GM 6.6L Duramax LB7/LLY/LBZ
See full application list below
$269.99
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Description
Upgrade the worn, dirty firewall insulation in your 2001-2007 GM Truck with a PPE 149000105 Firewall Insulator - Black. Diesel engines produce a lot of heat, especially in high-output situations like towing and racing. They also produce plenty of heat in slower moving situations such as sitting in traffic. The PPE Firewall Insulator creates a barrier between you and the heat. The ceramic fiber interior sandwiched between the tightly woven silicone fiberglass outer fabric and the woven silica inner panel provides temperature resistance up to 1,290 degrees. Manufactured with merrowed stainless steel edging for long-lasting performance and grommets for an OEM fit.
Features:
- Ceramic Fiber Interior
- Merrowed Stainless Steel Wire Edging
- Woven Silicone Fiberglass and Silica Outer Fabrics
- Reduction in Engine Heat and Noise Entering the Cab
- Can Be Installed Without Removing Engine
Instructions & Tech Info
Installation Info
Customer Average
4 Hours
Reviews For PPE 149000105
Overall Rating
/5
5 Reviews
Rating Snapshot
4
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1
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Pain to install
Mitch (Knoxville) | June 7th, 2026
Maybe this is better with the engine out, but I chose to install it when replacing the downpipe, and it's nearly impossible to get everything to line up. I also had one grommet fall out completely and will not go onto the appropriate stud. The OEM plastic clips do not fit through the grommets as the instructions suggest. Pros: It looks great and probably works much better than OEM, but installation is a nightmare.
Verified Buyer
Ppe firewall insulation
Lsm (Wyoming) | August 24th, 2025
Im only writing this review because I was so impressed with the fit and quality. Replaced it when I was doing head gaskets so it was easier to get to.
Verified Buyer
Clean Up and Quiet Down
Colin (Ashburn, VA) | May 17th, 2024
If the insulation on your firewall was anything like mine, it looked like a racoon had a hay day in there. Easy to install, fitment was good and really finishes off that engine bay. I've even noticed some good sound deadening characteristics over whatever was there beforehand. If you have they money and you're looking to clean up your engine bay, this is a no brainer.
Verified Buyer
PPE Firewall Insulator
Dylan (Lafayette, IN) | February 2nd, 2024
The OEM firewall insulation in my LLY Duramax was completely falling apart and looked terrible. The new PPE firewall insulator cleaned up my engine bay and made it look respectable.
Verified Buyer
Very clean insulator
Gus (Washington) | November 6th, 2023
My stock firewall insulator was torn up and falling apart due to several upgrades and constantly snagging it. The PPE firewall insulator was an easy install and it looks great! It seems like it also helps dampen engine noise in the cab which is nice.
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Specifications For PPE 149000105
MPN
149000105
SKU
PPE149000105
GTIN
811070027091
ID
44197
Manufacturer Name
PPE
Shipping Weight
3.00 lb.
Shipping Length
8 in.
Shipping Width
8 in.
Shipping Height
15 in.
Fuel Type
Diesel / Gas
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal
L6R7
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