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ARP 233-5203 Main Cap Fasteners Chrome Moly Main Bolts - Kit

(Chevrolet S10 1988-97, Impala 1985, C1500 1988-97, K1500 1988-97, C10 Pickup 1985-86, Caprice 1985-90, 1992-93, El Camino 1985-87 + 14 more models)

Manufacturer

Picture for manufacturer ARP

Part Number

233-5203
9 reviews
Sale Price

$112.60

Estimated ship date Friday, November 20

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Fitment guaranteed

Fitment guaranteed

Product Details

ARP 233-5203 Main Cap Fasteners are precision-engineered main bolts designed for high-performance and competition engines. This 4-bolt main kit delivers exceptional reliability and strength for demanding applications where main cap stability is critical.

Key Features:

  • Forged from premium 8740 chrome moly steel for superior strength and durability
  • Heat-treated to 180,000-200,000 psi tensile strength depending on series
  • Threads rolled after heat-treating for 1000% longer fatigue life compared to conventional fasteners
  • Generous under-head radius design reduces stress concentrations
  • Precision-manufactured to meet professional engine builder standards
  • Includes parallel-ground hardened washers for proper load distribution
  • Eliminates main cap walk and fretting for improved engine reliability

ARP's advanced manufacturing process includes in-house heat-treating and precision J-form thread rolling, creating fasteners with exceptional strength and consistency. These main bolts provide the ultimate insurance against main cap movement and ensure proper clamping force in both street performance and racing applications.

Products specifications

Fits

Chevrolet S10 1988-97, Impala 1985, C1500 1988-97, K1500 1988-97, C10 Pickup 1985-86, Caprice 1985-90, 1992-93, El Camino 1985-87, K2500 1988-95, Express 2500 1996-97, K10 Pickup 1985-86, C20 Pickup 1985-86, Express 1500 1996-97 + 9 more models

Fastener Style

Bolt

Fastener Yield Strength (psi)

200,000 psi

Head Style

Hex

Main Bolt Style

4-bolt

Notes

Fits blocks with 1/2 in. straps on front and rear caps only.

Nuts Included

No

Quantity

Sold as a kit.

Washers Included

Yes

Works with Windage Tray

No

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Trustworthy seller. This is my second order. Got it quickly. good job!

Super fast shipping, easy to use site, would buy again from site

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

Just what you want from a merchant but don't expect; fast, courteous service and attention to the details of your order. I'm a happy consumer. Thank you, Autoplicity. I'll be back.

competitive prices and good selection. Will definitely look to this vendor when purchasing automotive parts in the future. I ordered a roof rack and it was very hard to find elsewhere and the few places I did find it, it was more expensive.. it was cheap and easy here. thanks :)

Lowest price on the Internet, good packaging and fast shipping.

Ordering was simple and shipped quickly. Received undamaged and exactly what i ordered. will order from them again.

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