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🔧 Bolt up with confidence — the last exhaust manifold set you'll ever need!
The APDTY 103944 Exhaust Manifold Anti-Corrosion Flanged Bolt Set features 12 high-grade M8 x 1.25 bolts with Grade 10.9 strength and zinc anti-corrosion plating. Engineered for a direct fit across a broad range of popular vehicle brands, these bolts provide exceptional durability and rust resistance, ensuring a secure and long-lasting exhaust manifold installation.
| ASIN | B00Y1IQ5XS |
| Best Sellers Rank | #767,340 in Automotive ( See Top 100 in Automotive ) #352 in Automotive Replacement Exhaust Manifolds |
| Brand | APDTY |
| Compatible Groove Diameter | 8 millimeters |
| Customer Reviews | 4.7 out of 5 stars 829 Reviews |
| Exterior Finish | Ready To Paint If Needed |
| Fastener Size | M8 |
| Fastener Type | Flange Bolt |
| Finish Types | Anti-Corrosion |
| Grade Rating | Grade 10.9 |
| Head Style | Flat |
| Head Type | Flange |
| Item Diameter | 8 millimeters |
| Item Dimensions | 5.5 x 1.75 x 2 inches |
| Item Hardness | Grade 10.9 |
| Item Weight | 4.96 ounces |
| Manufacturer | APDTY |
| Manufacturer Grade | Grade 10.9 |
| Material | Anti-Corrosion |
| Material Type | Anti-Corrosion |
| Maximum Shear Strength | 580-690 MPa |
| Metal Type | Zinc |
| Model | 103944 |
| Number Of Items | 1 |
| Number of Pieces | 12 |
| Outside Diameter | 8 millimeters |
| Part Number | 103944 |
| Screw Head Style | Flat |
| Set Name | Set of 12 |
| Set Screw Thread Type | Metric |
| Size Name | M8 x 1.25 |
| Thread Class | 1A |
| Thread Size | M8 |
| Thread Style | Right Hand |
| Thread Type | Right Hand |
| UPC | 411000066970 |
| Unit Count | 12 Count |
M**N
Fit perfect
No issues with install fit my 07 Jeep jk 3.8l. Price was a little on the steep side! But no issues and perfect figment.
A**R
Great bolts better than the original ones
Bolted right up have no problems replaced both side exhaust manifold so my Avalanche can't be happier they were very easy to install I had no issues the only problem you'll run into is if the existing bolts snap off in the heads
M**A
They dont look and feel durable.
But they work like a charm.
M**G
4.5 stars for quality, but does NOT fit Chevy 4.3L Vortec
Was advertised as fitting a 98 Chevy 4.3L Vortec. Bolt size is way too small, didn't even grab threads in the head. Quality of the bolts is fantastic, and the coating looks like it will hold up over time. Just have to find a different use for them now.
P**S
These fit the GM 5.3 perfectly
Not a whole lot to say. They are exhaust bolts, and they fit my 2005 Suburban with it's 5.3 liter engine. I put some copper anti seize on them and torqued them down. They seem to be holding just fine a couple of months later.
B**N
Good
Good
A**.
These bolts are of better qualtiy and look better than oem
These bolts are of better qualtiy and look better than oem Just did the DOD delete on my truck and if you are removing the manifolds DO NOT put the oem bolts back in they are prone to breaking on removal but I wouldn't trust them to be reinstalled either. If you're pulling the heads you can get the old bolts extracted that don't come out but don't put oem back in, these are equivalent to arp in my opinion.
F**S
Very good product
Very good product
M**E
chev truck bolt
torqued up and holding well in 2003 chev truck.
R**N
Do not buy this product
Broke off in my head and now can’t get out i have weld a nut to it 5 times and it keeps braking off further in ,no space in there to drill it out so i have to ither pull the head or pull the engine
C**S
Not as pictured in sellers photos
The heads of the bolt are hollow and have been drilled for tie wire, I purchased these as replacement exhaust manifold bolts.
Trustpilot
2 months ago
5 days ago