My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

MAHLE 41786.020 Plasma-Moly Piston Ring Set Bore Over - 4.020 020

(Chevrolet Silverado 1500 1999-2014, S10 1995-2004, C1500 1996-98, Blazer 1995-2005, K1500 1996-98, Express 2500 1996-2005, Astro 1995-2005 + 20 more models)

Part of: MAHLE Plasma-Moly Piston Ring Set Bore

Other options in this family: MAHLE S40564CP.030 MAHLE 41718.030 MAHLE 41787CP-030 MAHLE 41699 MAHLE 41497CP.020

Manufacturer

Picture for manufacturer MAHLE

Part Number

41786.020
14 reviews
Sale Price

$46.76

Estimated ship date Monday, November 23

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The MAHLE 41786.020 is a Plasma-Moly Piston Ring Set designed for a 4.020" bore (+.020" oversize), part of MAHLE's Original OE Replacement line. Built with SAE 9254 high-alloy steel base material, this ring set delivers the OE-equivalent form, fit, and function engine builders demand during overhaul or performance rebuilds.

Ring Configuration & Specifications:

  • Upper Compression Ring (UCR): Type RF-13PF | Face Coating: Plasma-Moly | Axial Height: 1.5mm
  • Lower Compression Ring (LCR): Type THM-13 | Axial Height: 1.5mm
  • Oil Control Ring (OCR): Type CP-20 | Face Coating: Chrome | Axial Height: 3.0mm
  • Bore Size: 4.020" (+.020" oversize)
  • Shallow oil ring groove design

Key Features:

  • Plasma-moly top ring face coating provides exceptional scuff resistance and reduced break-in time
  • SAE 9254 high-alloy steel base material offers higher tensile and yield strength, extended fatigue resistance, and increased material hardness
  • CP-20 oil control ring with exclusive 20-degree ear angle delivers superior side sealing in the oil ring groove and simplifies installation
  • THM-13 second ring provides superior oil control, improved combustion gas management, and top ring stability
  • Designed to reduce friction and ring mass while minimizing engine oil consumption
  • OE form, fit, and function — engineered to meet or exceed original equipment specifications

MAHLE is one of the largest OE piston ring manufacturers in the world, supplying rings directly to vehicle manufacturers globally. The 41786.020 ring set is sold as a complete set and is the correct choice for engines that have been bored +.020" over standard.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2014, S10 1995-2004, C1500 1996-98, Blazer 1995-2005, K1500 1996-98, Express 2500 1996-2005, Astro 1995-2005, Express 1500 1996-2014, P30 1996-99, 2001, G30 2001-02, Silverado 1500 Classic 2007 + 16 more models

Piston Ring Size

.020IN

Piston Ring Type

Premium

Autoplicity has a vast sea of parts (just what I needed)and the Shipping was fast and furious. Great Company. Thanks Tom.

So far all is good.

Great price, fast shipping, saved $30 over jegs and summit. Recieved it 4 days after oreder was placed.

It was good

Quick service

Best prices anywhere!! They take care of their customers, too!

So far so good, quick. Hope you have the part !

The best prices and fast shipping!

very fast and easy.

Haven't installed item yet so this rating is based on the service as of now.

fast and easy to find what i need. Cost beat anyone around and shipping was quick

using amazon pay is easy I was not able to track the UPS shipment until the day of delivery. Maybe the number did not scan correctly at the time of shipment. Customer service did show it was shipped on time, and it arrived quickly.

SMOOTH

Real easy. Thanks

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy