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The ARP 234-2503 Balancer Bolt Kit is a premium, heavy-duty fastener set made from Grade 8 alloy steel with a glossy black oxide finish. Engineered for LS1 and LS6 5.7L & 6.0L engines, it offers precision threading (3/8"-16 UNC) and durability trusted by top-tier motorsports. Proudly manufactured in the USA, this kit ensures secure, vibration-resistant fastening for professional-grade engine balancing.
| ASIN | B0785P5L8M |
| Best Sellers Rank | #127,490 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Replacement Engine Harmonic Balancer Repair Kits |
| Brand | ARP |
| Color | Black |
| Compatible Groove Diameter | 1 inches |
| Customer Reviews | 4.9 out of 5 stars 113 Reviews |
| Drive System | Rear-Wheel Drive |
| Exterior Finish | Black Oxide |
| Fastener Size | 3/8 in - 16 TPI |
| Fastener Type | U-Bolt |
| Finish Types | glossy |
| Head Style | Hex |
| Head Type | Hex |
| Included Components | LS1, LS6 5.7L & 6.0L balancer bolt kit |
| Item Dimensions | 10 x 6 x 1.75 inches |
| Item Hardness | Grade 8 |
| Item Type Name | Balancer Bolt Kit |
| Manufacturer | ARP |
| Manufacturer Grade | heavy-duty |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Model | 234-2503 |
| Number Of Items | 1 |
| Number of Packs | 1 |
| Part Number | 234-2503 |
| Screw Head Style | Hex |
| Screw Point Style | U-Shape |
| Set Name | Balancer Bolt Kit |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Size Name | 3/8 in - 16 TPI |
| Thread Class | 2A |
| Thread Coverage | Fully Threaded |
| Thread Size | 3/8"-16 UNC |
| Thread Style | Right Hand |
| Thread Type | Unc |
| UPC | 672036030315 |
| Unit Count | 1 Count |
A**N
Fits
Works great for ls
J**F
Excellent product do not use factory bolt
This is a must buy you must use when replacing the harmonic balancer. If you don’t, you will have problems. Do not use the factory bolt.
N**Z
Impressive.
Make sure you get the 12 point socket when you buy this. I had an eight point and it did not fit. After getting the right socket, I installed this and let me tell you something, 235 foot pounds is nothing to shake a stick at. I am impressed.
D**R
Real arp bolt
Trust from this seller. Real arp bolt
A**T
Correct
As described
C**A
Now THAT's a bolt
This thing is definitely engineered to last. Way stronger than the stock GM bolt.
D**H
Easy instal
Much easier to deal with that the factory TTY bolt since this one I can reuse if I do any internal work.
K**Z
Quality!!
The quality is excellent
G**T
Good quality.
Best price on internet or in store. Always good ARP quality.
J**N
Worth the money!
Well worth it. If you have to remove the balancer multiple times for drag racing projects or anything. Don't waste time with stock ones or oem get this. Just make sure you order or have the right socket. But 110% worth it. Im buying more in the future for other projects.
C**Y
10/10
ARP is the best, just follow the instructions
M**X
Fast ship
Perfect fit
Trustpilot
3 weeks ago
2 weeks ago