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MAHLE S42188.020 Engine Piston Ring Set 0.020" Oversize OE Replacement

(Cadillac DeVille 1999, 2003-04, CTS 2003-04, Eldorado 1999-2002, SRX 2004, Seville 1999-2004; Dodge Ram 2500 2009-10, Ram 3500 2009-10 + 6 more models)

Part of: MAHLE Engine Piston Ring Set

Other options in this family: MAHLE 08320N0 MAHLE 083 06 N0 MAHLE 50399N0 MAHLE S42221.020 MAHLE 08257N0

Manufacturer

Picture for manufacturer MAHLE

Part Number

S42188.020
12 reviews
Sale Price

$37.02

2 left at this price

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Usually delivered within 2 days

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Product Details

The MAHLE S42188.020 is a premium OE-replacement engine piston ring set in 0.020" oversize, engineered to deliver factory-level sealing, oil control, and combustion efficiency for engines requiring a slightly larger bore fit during a rebuild or engine refresh.

Key Features:

  • OE Form, Fit, and Function: Designed to meet or exceed original equipment specifications for reliable, drop-in replacement performance
  • SAE 9254 High Alloy Steel Construction: Provides superior tensile and yield strength, extended fatigue resistance, and increased material hardness over standard ring materials
  • Plasma-Moly Top Ring Coating: Barrel-faced compression rings with CNC-controlled gap chamfer reduce blow-by and maximize combustion sealing efficiency
  • Napier Second Ring Design: SAE 9254 high alloy steel napier second rings deliver superior oil control, improved combustion gas management, top ring stability, and best-in-class sealing
  • CP-20 Oil Ring Assembly: Features an exclusive 20-degree ear angle for the best possible side seal in the piston oil ring groove, with a special chemical polish on the expander for enhanced oil drain-back
  • Pre-Lapped for Immediate Seating: Rings are pre-lapped at the factory, virtually eliminating break-in time and allowing the engine to seal quickly after startup
  • Reduced Friction Engineering: Optimized ring tension and mass minimize parasitic friction loss and engine oil consumption while extending service life

MAHLE is one of the world's largest OE piston ring manufacturers, supplying major engine producers globally. The S42188.020 ring set reflects that OE-level precision and is the choice of professional engine builders who demand quality and consistency on every rebuild.

Products specifications

Fits

Cadillac DeVille 1999, 2003-04, CTS 2003-04, Eldorado 1999-2002, SRX 2004, Seville 1999-2004; Dodge Ram 2500 2009-10, Ram 3500 2009-10, Ram 5500 2009-10, Ram 4500 2009-10; Buick LeSabre 2000-04, Park Avenue 2000-04 + 2 more models

Piston Ring Size

.020IN

Great Price very speedy shipping will buy again

I recently ordered an Invidia N1 exhaust system from autoplicity and to be honest I was concerned at first my order was not shipped for 2 days, I know I was just very impatient. I'm not sure how their business works but 2 days of processing? I emailed their shipping department and got an email back explaining everything and it also said I would get an email today or the next day and sure enough I did! Had the lowest price for the part I was looking for. Also all the good reviews just made me want to order from this company plus the good prices you can't go wrong.

Excellent

Simple

Easy to find needed parts

Simple. Great service!

Very satisfying. I am thankful that your company also offered me a discount from the very beginning. It shows commitment on your behalf to satisfy your customers.

Good choice

Easy search and nav for what I needed.

I ordered a hitch off of this site for Christmas, I have never heard of it nor did I know how they were, but they are great! Got my package in I'd say 4 days, very fast and it was exactly what I wanted! Only down fall was they charged me 3 times and I was short 150$ for a few days. I got my money back and I would definitely order again.

Quick and easy, great checkout w/Amazon.

Awesome! Fast, easy, user friendly, and great prices you can't beat

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