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ARP 135-2501 Harmonic Balancer Bolt Kit for Chevy Big Block

Manufacturer

ARP

<p>Today, ARP&rsquo;s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.</p>

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Part Number

135-2501
17 reviews
03/12/2036 1:18 AM
Sale Price

$24.64

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The ARP 135-2501 Harmonic Balancer Bolt Kit is specifically engineered for Chevrolet Big Block engines, providing superior clamping force and reliability compared to OEM fasteners. These high-strength bolts are manufactured from premium materials and heat-treated to deliver exceptional tensile strength, ensuring your harmonic balancer stays securely attached even under extreme racing conditions.

Key Specifications:

  • Thread Size: 1/2 inch - 20 TPI
  • Under Head Length: 1.550 inches
  • Socket Size: 5/8 inch hex
  • Application: Chevrolet Big Block V8 engines
  • Material: High-grade alloy steel with heat treatment
  • Finish: Black oxide for corrosion resistance

ARP fasteners are precision-manufactured to exacting tolerances and feature rolled threads that are significantly stronger than cut threads. This harmonic balancer bolt kit includes the necessary hardware to properly secure your damper, preventing potentially catastrophic engine damage from a loose or failed balancer. Each kit comes with ARP's ultra-torque assembly lubricant to ensure accurate torque readings and proper thread engagement.

Installation Note: Always follow ARP's recommended torque specifications and use the included assembly lubricant for optimal performance and fastener life.

Products specifications

Overall Diameter

1/2-20

Fastener Finish

Black oxide

Fastener Material

Chromemoly

Fastener Yield Strength (psi)

200,000 psi

Head Style

12-point

Quantity

Sold individually.

Socket

5/8

Thread Size

1/2-20 RH in.

UHL

1.55

Underhead Length (in)

1.550 in.

Washer Included

Yes

The customer service rep I was able to speak to very helpful and was able to email me an actual image of the product that I wanted before purchasing instead of the generic image that was being used on the website

Very quick and simple just the way it should be

Got exactly the product I wanted delivered as expected for the best price. It makes it hard to look elsewhere.

So far so good

Quick shipping, exactly what I needed for the best price!

Good!

Very good value and received my shipment in a very timely matter

We ordered the 63 Quart ARB Fridge Freezer and we are very pleased with Autoplicity. The order process on the website was quick and easy. The item was shipped out the next day and we received it within one week. This particular item has been difficult to find and we were very pleased with Autoplicity's pricing and shipping. Thank you for the great service!

great price and easy to order

Excellent e-merchant. Awesome service, great products and super low prices !!!

Fast service, and helpful staff.

good

Good store to deal with.<br><br>Will purchase from them again.

Autoplicity had the exact part I wanted at the best price upfront with no gimmicks or hidden conditions. Prompt shipping at a fair price. Simply excellent!

Fast shipping! would buy from again for sure! Great product at the best price that I could find!

I had been searching many sites for a better price on shocks for my 1999 Ford Explorer, upon finding Autoplicity the savings was 13.00 cheaper than all others. I instantly made the purchase. wish i had knew about them before I purchased the other items for my truck. will return as a customer .

I placed an order and 2 days later it was at my door!!! Very fast shipping and easy to navigate website! I would definitely recommend this site to all my friends. Keep up the great job!

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