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Wiseco Pistons K601M975 Forged Piston Kit for Subaru EJ22 Inverted Dome

(1991-1994 Subaru Legacy)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

K601M975
8 reviews
Sale Price

$768.99

3 left at this price

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Usually delivered within 2 days

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Product Details

The Wiseco K601M975 is a complete forged piston kit engineered specifically for Subaru EJ22 engines. This shelf stock kit features Wiseco's legendary forged aluminum construction, delivering exceptional strength and reliability for both performance and rebuilt applications.

Key Features:

  • Forged aluminum construction for superior strength-to-weight ratio
  • Inverted dome piston design optimized for EJ22 combustion chamber geometry
  • Complete kit includes pistons, rings, pins, and clips
  • ArmorGlide skirt coating reduces friction and wear
  • Precision-machined ring grooves for optimal seal and longevity
  • Designed for stock bore or standard rebuild specifications

Wiseco pistons are manufactured in the USA using aerospace-grade aluminum alloy and feature advanced forging processes that create a more uniform grain structure. The inverted dome design helps optimize compression ratio while maintaining proper valve clearance in the EJ22's unique horizontally-opposed engine architecture. This kit is ideal for engine rebuilds, replacements, or mild performance upgrades where durability and quality are paramount.

Products specifications

Fits

1991-1994 Subaru Legacy

Bore

97.5mm

Comp Height

33.25

Comp Ratio

8.5:1

Dome Volume

-20

Gram Weight

358

Rod

130.5

Stroke

75

Piston Quantity

4

Wrist Pin Style

Floating

Piston Material

2618

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Bore Diameter

97.50

Make

SUBARU

Industry

Automotive

Product Market

Sport Compact

Engine Type

ICE

Product Series

Professional

Product Type

Engine Piston Set

Wrist Pin Outer Diameter

0.9055

Forging Type

Slab Side

Out of Stock Message

Estimated Shipped Date 3-4 Weeks

Second Compression Ring Thickness

1.5

Top Compression Ring Thickness

1.2

EBAY Category ID

33623

Engine - Web

EJ

Make - Web

Subaru

Ring Set Included

Yes

Skirt Coating

Yes

Wrist Pin Included

Yes

Engine

EJ22

Wrist Pin Material

9310

Engine Detail

Subaru EJ22

Oil Ring Thickness

2.0

Piston Volume

-20.00

Compression Height

33.32

Title

Wiseco - Subaru, EJ22, 97.50 mm Bore, Piston Set of 4

Title - Web

Professional Subaru EJ22 Piston Set of 4 - 97.50 mm Bore - 33.32 mm CH, -20.00 CC

My order was handled promptly and was the best price I could find for a Vibrant Windshield Washer Bottle Replacement.

so far so good didn't receive the product yet >>?

Great prices. Fast Shipping. I would definitely do business again.

Good Prices and easy to use

Autoplicity was easy to use, low price and received the product very quickly. It arrived in excellent condition and was as described. I would buy from them again.

Excellent company. Will do business again. Super fast shipping, great price, and bike rack came in perfect condition.

I ordered Thule Aero Blade Load Bars as part of a bike rack for my Infiniti EX35. The part was order on Saturday, 04/14, and arrived at my doorstep on Tuesday, 04/17. And that was by FEDEX Ground shipping. Very very quick, and the right part to boot. Excellent service.

Autoplicity had my parts at the cheapest price & available the soonest<br>Will definitely use them again in the future

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