My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

ARP 135-5201 High Performance Series Main Kit - 4-Bolt

(Chevrolet Camaro 1972, Corvette 1973-74, Impala 1970-74, C1500 1990-93, Chevelle 1970-72, Blazer 1973, C10 Pickup 1968-75, 1977-79 + 23 more models)

Part of: ARP High Performance Series Main Kit

Other options in this family: ARP 135-5002

Manufacturer

Picture for manufacturer ARP

Part Number

135-5201
10 reviews
Sale Price

$96.21

In Stock (7)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

ARP's High Performance Series main bolt kit delivers superior strength and reliability for competition engines. Forged from 8740 chrome moly steel, these precision-engineered fasteners are designed to meet the exacting standards of professional engine builders who demand maximum durability and performance.

Key Features:

  • 8740 chrome moly steel construction with 180,000 PSI tensile strength rating
  • Threads rolled after heat-treating for 1000% longer fatigue life compared to pre-heat-treat threaded bolts
  • Generous under-head radius reduces stress concentration points
  • Rolled threads provide superior strength and resistance to fatigue failure
  • Includes parallel-ground hardened washers for proper load distribution
  • 4-bolt main cap configuration for maximum block rigidity

This complete kit provides a premium replacement for OEM fasteners, offering substantially greater clamping force and reliability than Grade 8 hardware. The combination of advanced metallurgy, precision manufacturing, and post-heat-treat thread rolling makes these main bolts the choice of professionals building high-performance and racing engines.

Products specifications

Fits

Chevrolet Camaro 1972, Corvette 1973-74, Impala 1970-74, C1500 1990-93, Chevelle 1970-72, Blazer 1973, C10 Pickup 1968-75, 1977-79, Caprice 1970-75, El Camino 1970-72, 1974, K2500 1991-95, C3500 1988-95 + 19 more models

Fastener Style

Bolt

Fastener Yield Strength (psi)

180,000 psi

Head Style

Hex

Main Bolt Style

4-bolt

Nuts Included

No

Quantity

Sold as a kit.

Washers Included

Yes

Works with Windage Tray

No

Gud

Easy ordering process! Well designed site!

A1

Just the right part and came right on time

Product didn't match photo. But otherwise great experience.

Easy, Clear, Quick

A+shipping was quick, communications were quick

Best prices online! Ordered a JBA performance exhaust and Airaid intake system for my 06 F-150. Was hesitant at first because I never heard of them but ordering was a breeze and saved me over $100 total for two items compared to anywhere else. Had package at my door in about 24 hours and even selected normal UPS ground shipping. Very satisfied and will definitely return!

Autoplicity was plenty cheaper than competitors for the springs I needed. I was shopping around and left the website after beginning a transaction and they sent me a coupon for 25% off shipping if I would return and purchase from them, which was cool. Unfortunately the coupon code didn't change the price and I didn't receive 25% off, but it was still cheaper than others.

Autoplicity gave me prompt notification both when my order was processed and when the order shipped. The price was the best I could find anywhere, and several good reviews made me confident in my choice of stores over other stores who were charging more. Thanks, Autoplicity!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy