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MAHLE 40843CP-030 Moly Piston Ring Set 4.390 in. Bore 8-Cylinder

(Chevrolet Silverado 1500 2003-06; Ford F-150 1975-79, Mustang 1969-71, F-250 1973-79, 1983-93, 1995-96, Thunderbird 1968-76 + 40 more models)

Manufacturer

Picture for manufacturer MAHLE

Part Number

40843CP-030
14 reviews
Sale Price

$104.57

Estimated ship date Monday, November 23

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Product Details

The MAHLE 40843CP-030 is a professional-grade moly piston ring set engineered for 8-cylinder engines with a 4.390-inch bore. MAHLE is a globally recognized OEM and aftermarket supplier, and this ring set is manufactured to meet or exceed original equipment specifications for reliable performance and long service life.

This three-piece ring set features a molybdenum (moly) face coating on the top compression ring, which significantly reduces friction, improves wear resistance, and helps maintain optimal cylinder sealing under high heat and pressure conditions. The .030 over-bore size makes this set ideal for engines that have been bored 30 thousandths of an inch over standard during a rebuild.

Ring Dimensions:

  • Bore Size: 4.390 in. (+.030 over)
  • Top Compression Ring Thickness: 5/64 in.
  • Second Compression Ring Thickness: 5/64 in.
  • Oil Control Ring Thickness: 3/16 in.
  • Number of Cylinders: 8
  • Ring Face Material: Moly (Molybdenum) coated

Key Features:

  • Molybdenum face coating for reduced friction and extended wear life
  • Precision-manufactured to tight tolerances for consistent ring gap and seal
  • Designed for high-performance and standard engine rebuilds
  • Complete set included — covers all 8 cylinders
  • Manufactured by MAHLE, a trusted OEM-level supplier

The MAHLE 40843CP-030 piston ring set is an excellent choice for engine rebuilders seeking OEM-quality components. Whether performing a standard rebuild or a performance overhaul, these moly rings deliver the sealing efficiency and durability needed for long-lasting engine health.

Products specifications

Fits

Chevrolet Silverado 1500 2003-06; Ford F-150 1975-79, Mustang 1969-71, F-250 1973-79, 1983-93, 1995-96, Thunderbird 1968-76, F-350 1973-79, 1983-93, 1995-97, Galaxie 500 1969-74, F-100 1973-77, 1979, F-250 Pickup 1973-74 + 36 more models

Piston Ring Size

.030IN

Piston Ring Type

Premium

Top Ring Material

Cast iron

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love how it connected to Amazon. Super easy !

Great found everything I need

So far good.. now wait to arrive to see the quality products. .

They had exactly what I wanted (Cyclo Max Clean Orange Powered, and the price was the lowest of any other sight).

Great prices!

I was looking at reviews after placing my order and was thinking had I read the reviews before ordering I probably would have thought about making my order with this company. I called because I was a little concerned and the lady I talked with was very

Easy

Cheapest price, manufacturer direct

Very good

Easy payment and super fast shipping! Will order from again!

By far the fastest shipping I've ever had online! Great business to work with and had the cheapest price I could find!

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