Product Summary

1.55" Under Head Length, 1/2"-20 Thread Pitch, Steel

  • Made from high-strength 8740 chromoly for maximum durability and performance
  • Bolt features an increased diameter and 12-point head for improved accessibility and easy wrenching
  • Hardened parallel ground washer prevents galling and promotes even torque loading
  • Has a tensile strength of 170,000 PSI for added reliability and strength
  • Designed for use with B/B Chevy engines and comes with a washer for easy installation. The recommended socket size is 13/16" 12 point socket and has a thread size of 1/2-20
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Key Specs

MFG. Part #235-2501
BrandARP
Under Head Length1.55"
Thread Pitch1/2"-20
Material TypeSteel
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Need To Know

Quick and Easy Returns

Return Policy

ARP 235-2501 Details

8740 Chromoly. Bolt feature increased diameter, 12 point head for improved accessibility and easy wrenching.  Hardened parallel ground washer prevents galling while promoting even torque loading. 170,000 PSI.

  • For B/B Chevy, use 13/16" 12 point socket
  • "Underhead" length is 1.550"
  • 1/2-20 Thread Size
  • Washer Included

ARP 235-2501 Specifications

KEY SPECS
MFG. Part #235-2501
BrandARP
Under Head Length1.55"
Thread Pitch1/2"-20
Material TypeSteel
GENERAL
Wrench Type12 Point
FinishBlack Oxide
Sold in QuantityEach
GTIN Code672036009717
ColorBlack

Ratings & Reviews

5

5 Reviews

Overall Assessment

Customers appreciate the product for its quality and functionality. Many have found it practical for use in their rebuilt motors. Notably, users believe the product meets torque specifications and fits properly, which confirms its usability and precision in design. Reviews show high levels of satisfaction and customers would choose this product for future builds, suggesting superiority over competitors. The product stands out for its reliability and precision performance.

5

5 reviews

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Filter by Ratings

The perfect bolt

5.0

4 months ago

Malibu

Lincoln Nebraska

Verified

Made of great quality and was exactly what I needed. Thank u speedway

Would Recommend

would buy again

5.0

3 years ago

d32

N.C.

Verified

Got a "rebuilt" 350 motor in a trade, discovered the Harmonic Balancer bolt was stripped, so I moved up a size to the big block bolt...

Would Recommend

ill use this in future builds

5.0

4 years ago

evans

nanaimo b.c.

Verified

worked as intended

Would Recommend

great fit

5.0

5 years ago

BBC JOHN

Casper WY

Verified

fit properly

Would Recommend

Great product

5.0

7 years ago

Storm

Webster City , Ia

Verified

I know it will meet torque spec .

Would Recommend

Showing 5 of 5 reviews

Questions & Answers

1 Question • 1 Answer

is this bolt 1/2"x20 2 1/4"long for bb chevy

by d martin

• 15 years ago

1 answer

1 of 1 questions shown

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Customer Impersonation Script