Best Automotive Performance Engine Intake Manifold Bolts in 2026

KEEPS EXHAUST PARTS IN PLACE -- Designed to support undercar exhaust components

CONSISTENT PERFORMANCE -- Spring designed with the right compression strength for a secure connection

PREMIUM MATERIALS -- Made from high-quality materials for durability and long life

Grade 5 socket head

Zinc plated for protection and appearance

Includes hardened flat washers for uniform torque

Compatible with Ford Small Block 260 289 302 (Late 351W) OEM and Aftermarket Intake Manifolds

These are High Grade 18-8 (304) Stainless-Steel 12ea 5/16x2.0” Bolts and SS Washers That will NOT rust or Corrode like the chrome or steel ones sold. These Use a 1/4” Allen Wrench/Socket

We are an AS9100D and ISO 9001:2015 Certified Manufacturer that produces aerospace parts for The Boeing Aircraft Company and The US Military. Parts we produce fly at 30,000 feet where failure is not an option. We put the same quality into every part we produce.

Fits small block Chevrolet 265-400 and Chrysler 273-439

3/8 In.16 x 1 In., grade 5, chrome plated 12 point hex head bolts.

Bolt set includes a chrome custom tool

Fits small block Chevrolet 265-400 and Chrysler 273-440 cubic inch engines

3/8 inches x 1 inch

Hex head intake bolt design is easier to install in tight spaces

Package Dimension : 3.81 centimeters L x 5.588 centimeters W x 8.636 centimeters H

Country of Origin: UNITED STATES

Package Weight: 0.6 pounds

Facilitates optimum sealing of gasket surfaces to prevent intake manifold leaks

Manufactured from chrome moly steel with a black oxide finish

Rated at 170,000 PSI, which is considerably stronger than Grade 8 hardware

BOLT KIT INTAKE MANIFOLD GM LS1/LS2 SERIES

Part number: 8515

Fit type: Vehicle Specific

Scope of application: These intake manifold stud bolts are for Honda Acura B D H F B18 GSR SI Engine Series All Models. For more detailed information, please refer to the product description section;Professional design: These intake manifold stud bolts are professionally designed. There is no direct contact between metal and metal in the intake manifold, which can ensure the cooling of the intake pipe

Scope of application: These intake manifold stud bolts are for Honda Acura B D H F B18 GSR SI Engine Series All Models. For more detailed information, please refer to the product description section;Professional design: These intake manifold stud bolts are professionally designed. There is no direct contact between metal and metal in the intake manifold, which can ensure the cooling of the intake pipe

Package List：Stud Bolt Kit,there are ten 304 stainless steel nuts and studs and ten heat nylon nut washers each, which is a complete set.perfectly meet yourneeds.;Fitment：Intake Manifold Studs Bolt Kit,Strictly according to the original standard,replacement for Acura B D H F B18 GSR SI Engine Series All Models.Please kindly check the compatibility and specifications before ordering.