What is the purpose of the ArmorGlide skirt coating?

The ArmorGlide coating on these Wiseco pistons helps to reduce friction between the piston skirt and the cylinder wall. This can lead to quieter operation and improved resistance to seizure, especially under high-stress conditions.

What does the -22.00 CC dish in the piston crown mean for my engine build?

The -22.00 CC dish is a specific volume removed from the piston's top surface. This feature is critical for tuning your engine's compression ratio. It's designed to work with specific cylinder head volumes and camshafts to achieve your desired compression level.

Are these pistons suitable for a street-driven car?

These are Wiseco's Professional Series forged racing pistons, designed for heavy to severe duty race builds. While they offer exceptional durability, they are not CARB approved and may not be ideal for all street applications due to their performance focus and potential emissions compliance issues.

Wiseco 302 4.040in Bore Piston Set K0173X4

Name: Wiseco Ford Small Block 302 4.040in Bore 1.165in CH -22.00 CC Piston Set
Brand: Wiseco
SKU: wiseco-wiseco-ford-small-block-302-4-040in-bore-1-165in-ch-22-00-cc-piston-set-t14-874378
Price: 1018.89 USD
Availability: BackOrder

Wiseco Ford Small Block 302 4.040in Bore 1.165in CH -22.00 CC Piston Set

$1018.89

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Wiseco forged piston set for Ford Small Block 302. 4.040in bore, 1.165in CH, -22.00 CC dish. Built for severe duty.

Key Features

Fits Ford Small Block 302 engines.
Forged from 2618 aluminum for improved tensile strength.
4.040 inch bore size.
1.165 inch compression height.
-22.00 CC dish in the piston crown.
ArmorGlide skirt coating for reduced friction and seizure resistance.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Forged from 2618 aluminum, these Wiseco pistons are built for serious performance in your Ford Small Block 302. The 4.040-inch bore size is a common upgrade for the 302, allowing for increased displacement and potential power gains. This set features a -22.00 CC dish in the crown, which is crucial for achieving the correct compression ratio with your specific cylinder heads and camshaft combination.

Wiseco's Professional Series pistons are packed with features for durability and performance. The ArmorGlide skirt coating helps reduce friction and noise while resisting seizure, even under heavy loads. You'll also find precision ring grooves, anti-detonation grooves, and features designed for improved ring seal, all contributing to better combustion efficiency and power delivery. The fully machined crown and forced pin oiling further enhance their ability to handle severe duty applications.

This set includes eight pistons, each with a 1.165-inch compression height and a 0.927-inch pin diameter, ready for your custom engine build. Please note that these pistons are not CARB approved and cannot be shipped to California.