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ARP 134-2503 Square Drive Harmonic Balancer Bolt - Kit

(Chevrolet Camaro 1967-75, 1987-2001, C1500 1988-95, Chevelle 1964-67, 1969-72, Blazer 1973-74, 1987-94 + 14 more models)

Part of: ARP Square Drive Harmonic Balancer Bolt

Other options in this family: ARP 145-2503 ARP 120-2502 ARP 135-2503 ARP 190-2502 ARP 180-2502

Manufacturer

Picture for manufacturer ARP

Part Number

134-2503
9 reviews
Sale Price

$36.33

In Stock (9)

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Usually delivered within 2 days

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Product Details

The ARP 134-2503 square drive balancer bolt is engineered to withstand the extreme forces generated as your engine's crankshaft flexes and twists during operation. Manufactured from heat-treated 8740 chrome moly steel and rated at an impressive 200,000 PSI tensile strength, this bolt provides maximum clamping force to ensure your harmonic balancer remains securely locked in position under all operating conditions.

Key Features:

  • Heat-treated 8740 chrome moly steel construction with black oxide finish for corrosion resistance
  • 200,000 PSI tensile strength—significantly stronger than standard Grade 8 hardware
  • Integrated 1/2" square drive head accepts standard ratchets and breaker bars for easy engine rotation
  • Includes heavy-duty 1/4" thick wide area washer for optimal load distribution
  • Precision manufactured in-house by ARP for consistent quality and reliability

The distinctive square drive feature machined into the bolt head eliminates the need for special tools when rotating the crankshaft assembly, making engine work more convenient while providing a secure fastening solution that professional engine builders trust.

Products specifications

Fits

Chevrolet Camaro 1967-75, 1987-2001, C1500 1988-95, Chevelle 1964-67, 1969-72, Blazer 1973-74, 1987-94, C10 Pickup 1961-68, 1972, 1974-76, 1978-81, Caprice 1966-67, 1969-76, 1980-85, 1989-96, C3500 1988-95 + 11 more models

Fastener Finish

Black oxide

Fastener Material

Chromemoly

Fastener Yield Strength (psi)

200,000 psi

Head Style

Square drive

Quantity

Sold individually.

Thread Size

7/16-20 RH in.

Underhead Length (in)

2.470 in.

Washer Included

Yes

n/a

simple and easy to use

Great prices!!

good dealer

good experience

Order shipped 2 days after ordered <br>and hey gave me a tracking number which is cool<br>lets see hoe fast it will come

BEST PRICES ON THE NET. TRUST ME I'VE LOOKED. HECK, EVEN CHEAPER THAN EBAY. CUSTOMER SUPPORT IS SO MUCH BETTER THAN ANY OTHER PARTS COMPANY OUT THERE. QUICK RESPONSE. THANKS AUTOPLICITY!

Great prices on the products I want. Quick shipping.

Excellent service!!!! Ordered another part from one of those big chain stores three days earlier and got your part one day sooner than theirs. Thanks. Excellent customer service. Wouldn't hesitate to use you again.

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