1. Home
  2. Engines
  3. Briggs & Stratton Engines
  4. Briggs Single Model 28-33
  5. Rotating Assembly
  6. EC Bushing Conversion Kit for Model 31AVS Block to fit Model 28 Non-AVS Crank
EC Bushing Conversion Kit for Model 31AVS Block to fit Model 28 Non-AVS Crank
6557 Bushing Conversion Kit for Model 31 Block to fit Model 28 Crank
Write a Review

EC Bushing Conversion Kit for Model 31AVS Block to fit Model 28 Non-AVS Crank

Part Number: 6557
Online Price: $39.95
Bushing Conversion Kit EC for Model 31AVS Block to fit Model 28 Non-AVS Crank
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

EC Bushing Conversion Kit – Adapt Model 31/33 AVS Block to Fit Model 28 Non-AVS Crankshaft


The EC Bushing Conversion Kit is engineered to allow a Model 28 or Model 31 Non-AVS crankshaft to be properly installed in a Briggs & Stratton Model 31 or 33 AVS Intek engine block. This conversion is especially valuable for engine builders looking to run a performance ARC billet crankshaft (originally designed for non-AVS blocks) inside an AVS-style block.


By using this kit, you can retain the robust architecture of the AVS engine while benefiting from proven non-AVS crankshaft and billet crank upgrade options. Ideal for custom builds, racing engines, or specialty performance applications.


Kit Includes:

  • Precision-machined bronze bushing
  • High-quality oil seal
  • Set screws for secure installation


Important Installation Notes:

  • Professional installation is required. The bushing must be precisely aligned and installed by an experienced engine builder or machinist.
  • Designed for use with Briggs & Stratton Model 31 and 33 AVS blocks converting to fit Model 28/31 Non-AVS crankshafts
  • Frequently used in racing and modified engines to fit ARC billet cranks


Key Benefits:

  • Enables use of non-AVS crankshafts in AVS engine blocks
  • Supports installation of ARC billet crankshafts in AVS-style blocks
  • Includes all necessary components for a secure and precise conversion
  • Made from durable, high-quality materials for long-term performance


Unlock custom engine combinations and build flexibility with the EC Bushing Conversion Kit—the go-to solution for serious engine builders working on modified or racing Briggs Intek engines.

FAQ

1. What does this conversion kit do?
It allows a Briggs Model 28 or 31 non-AVS crankshaft to be used in a Model 31 or 33 AVS Intek engine block by adapting the block’s crank bore using a precision bushing.


2. Can I use this with an ARC billet crankshaft?
Yes. The kit is commonly used to install ARC billet crankshafts—which are designed for non-AVS engines—into AVS-style blocks.


3. What’s included in the kit?
The kit includes:

  • Bronze bushing
  • Oil seal
  • Set screws


4. Do I need special tools to install it?
Yes. A professional machinist or engine builder should do installation to ensure alignment, press fit, and sealing.


5. What applications benefit from this kit?
It’s ideal for performance engine builds, racing lawnmowers, pulling tractors, and custom small engine setups where crank compatibility is a challenge.

Related Items

ARC 6383 Rod Bolt Set 1/4-28 x 1.25
$14.99
Out of Stock.

Recently Viewed Items

Logo