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🔧 Bolt up like a pro—strength and style that won’t quit!
The ARP 134-1202 Chromoly Header Bolt Kit is a premium-grade hardware set designed for Chevrolet Gen III/LS Series engines. Featuring 3/8˝ fully threaded hex bolts made from alloy steel with a black oxide finish, these bolts deliver an exceptional tensile strength of 170,000 psi. Engineered for precision fit and durability, the kit includes all necessary components for a seamless header installation, making it the #1 choice for high-performance automotive enthusiasts.
| ASIN | B00E5YSJ5U |
| Best Sellers Rank | #18,455 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Exhaust Header Bolts |
| Brand | ARP |
| Color | Black |
| Compatible Groove Diameter | 0.38 Inches |
| Customer Reviews | 4.9 out of 5 stars 504 Reviews |
| Exterior Finish | Painted |
| Fastener Size | 3/8 inches |
| Fastener Type | Hexagon Bolt |
| Finish Types | Black Oxide |
| Head Style | Hex |
| Head Type | Hex |
| Included Components | Hardware Kits - Other |
| Item Diameter | 0.38 Inches |
| Item Hardness | Grade 10.9 |
| Item Type Name | Hardware Kits - Other |
| Item Weight | 0.6 Pounds |
| Manufacturer | ARP |
| Manufacturer Grade | Grade 2 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Screw Head Style | Hex |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Size Name | 3/8 inch |
| Thread Coverage | Fully Threaded |
| Thread Size | 8 mm x 1.25 |
| Thread Style | Right Hand, 1/4-20 UNC |
| Thread Type | Metric |
| UPC | 672036041984 |
| Unit Count | 1.0 Count |
| Warranty Description | Manufacturer Warranty |
S**N
Bolts
Great product
M**T
awesome
great bolts, arp always makes great quality hardware , highly recommend for high performance applications
C**B
ARP for the win!
Great ARP quality and made in the USA! These are the best. Don’t bother with the rest.
M**E
ARP quality
They are ARP, enough said.
D**N
Fits factory 6.0 LS manifolds as well!!!
I used these to replace the OEM bolts for my factory manifolds during an engine swap in my 2008 Chevy 2500HD, 6.0 liter gas LS engine. The factory bolts break often, especially the rear bolts. I used these hoping they won’t break. So far so good. But it’s only been a few thousand miles. But they do fit perfectly in factory manifolds.
U**N
Must buy
Great replacement for the clapped out ls exhaust manifold bolts. These wont break when removing them.
R**3
Better than chevy OEM
Mechanic recommended these for exhause on 2011 chevy truck. The OEM will eventually break
W**L
ARP BOLTS
ARP BOLTS ARE THE WAY TO GO.
Trustpilot
2 weeks ago
1 month ago