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Photo of Bolt, Harmonic Balancer, ARP, BBC, 1/2" Square Drive Head
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ARP

Bolt, Harmonic Balancer, ARP, BBC, 1/2" Square Drive Head

Part# : CH40093
Mfg#: 135-2503
Sold As: Each
Ship Size: Standard
$43.99
List Price: $48.95
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Vehicle Specific View fitment for 4 models
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Easier engine rotation

These special versions of ARP's 200,000 psi rated balancer bolt has a forged 1/2" square-drive end that allows you to rotate an engine with any tool having a 1/2" square-drive. These "trick" bolts are made from 8740 chromoly steel with a black oxide finish and come with a 1/4" thick wide area washer. ARP, when only the best will do.

Notes

  • This item is not eligible for any further discounts or promotional pricing.

Find Item In These Catalogs

  • 2025 Chevelle, El Camino 64-77 332
  • 2025 GM G-Body 1978-1988 176
  • 2025 Monte Carlo 70-77 191
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1964–1977 Chevrolet Chevelle BB
1964–1987 Chevrolet El Camino 1964–1977: BB
1978–1987: BB
1978–1983 Chevrolet Malibu BB
1970–1988 Chevrolet Monte Carlo 1970–1977: BB
1970–1977: Big-Block
1978–1988: BB
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Bolt, Harmonic Balancer, ARP, BBC, 1/2
ARP Bolt, Harmonic Balancer, ARP, BBC, 1/2" Square Drive Head