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Wiseco 4040H Pro Tru Plasma-Moly Piston Ring Set 4.040 in. Bore

(Ford F-150 1975-96, Mustang 1964-95, F-250 1975-97, Bronco 1968-96, F-350 1975-80, 1983-97, Maverick 1971-77, Galaxie 500 1968-72 + 216 more models)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

4040H
11 reviews
Sale Price

$21.99

Estimated ship date Friday, November 20

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Product Details

The Wiseco 4040H is a high-performance plasma-moly piston ring set designed for a 4.040-inch (102.62mm) bore. Each set covers a single cylinder and features a 1/16 in. top ring, 1/16 in. second ring, and 3/16 in. oil ring configuration. These are replacement rings engineered specifically to pair with Wiseco Pro Tru pistons.

Key Features:

  • Plasma-moly top ring — high-tensile, pre-gapped moly-faced ductile iron construction for superior wear resistance and sealing
  • 4.040 in. (102.62mm) bore diameter — precision-sized for consistent ring-to-wall fit
  • Ring thickness: 1/16 in. top, 1/16 in. second, 3/16 in. oil
  • Pre-gapped design — reduces setup time and ensures consistent end gaps out of the box
  • Single-cylinder set — sold per cylinder; order the quantity matching your engine's cylinder count
  • Compatible with Wiseco Pro Tru piston lineup

Wiseco's Pro Tru ring sets deliver race-quality performance at an accessible price point, making them a popular choice for engine builders seeking reliable compression and oil control. Note: This ring set fits one piston. Order the quantity needed for your application.

Products specifications

Fits

Ford F-150 1975-96, Mustang 1964-95, F-250 1975-97, Bronco 1968-96, F-350 1975-80, 1983-97, Maverick 1971-77, Galaxie 500 1968-72, F-100 1975-83, F-250 Pickup 1972-74, Fairlane 1968-70, Ranchero 1968-79, Torino 1968-74 + 211 more models

2nd Ring

1/16 Cast

Bore

4.035

Bore (in)

4.040 in.

Bore (mm)

102.616mm

File Fit

No

Gapless

No

Notes

Single piston set.

Oil Ring

3/16 3-Piece Std Tension

Oil Ring Included

Yes

Oil Ring Material

Stainless steel

Oil Ring Tension

Standard

Oil Ring Thickness

3/16 in.

Quantity

Sold individually.

Second Ring Facing Material

Cast iron

Second Ring Included

Yes

Second Ring Material

Cast iron

Second Ring Thickness

1/16 in.

Size

.062-.062-.187

Top Ring

1/16 Hi-Tensile Plasma

Top Ring Facing Material

Plasma-moly

Top Ring Included

Yes

Top Ring Material

Iron

Top Ring Thickness

1/16 in.

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This was my first time. The seller keeps his promise. Delivery is really quick.

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I rate them a 10 out of 10.

It’s been great getting easy access and pricing to the parts I needed

Had the product I wanted and at the lowest price. Thank you for the outstanding service!<br><br>-M

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I was very pleased with the way my order was handled. I will definitely use them again.

Sweet price and in stock :

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