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 3781MS-112 File Fit Piston Ring Set Bore - 3.776

Part of: MAHLE File Fit Piston Ring Set Bore

Other options in this family: MAHLE 4010MS-112 MAHLE 3815MS-112 MAHLE 4015MS-112 MAHLE 4535MS MAHLE 4150MS-112

Manufacturer

Picture for manufacturer MAHLE

Part Number

3781MS-112
12 reviews
Sale Price

$148.45

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 3781MS-112 is a premium file-fit piston ring set designed for precision engine building and performance applications. This set features a 3.776-inch bore diameter with an additional 0.005-inch oversize, providing flexibility for custom bore sizing and optimal ring-to-cylinder wall fit.

Key Specifications:

  • Bore Size: 3.776 inches plus 0.005 inch oversize
  • Top Ring Width: 1.0mm
  • Second Ring Width: 1.0mm
  • Oil Ring Width: 2.0mm
  • File-fit design allows custom end-gap adjustment for precise fitment

MAHLE piston rings are engineered with advanced materials and coatings to deliver superior sealing, reduced friction, and extended durability. The file-fit configuration enables engine builders to precisely gap the rings to match specific bore tolerances and performance requirements, making this set ideal for custom builds, racing applications, and precision engine rebuilds where exact specifications are critical.

Features:

  • Premium MAHLE construction for consistent quality and performance
  • File-fit ends allow custom gap adjustment during installation
  • Engineered for optimal cylinder sealing and compression retention
  • Suitable for high-performance and racing applications

Products specifications

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Piston Ring Thickness

1.0mm, 1.0mm, 2.0mm

so far so good every thing was just as it should be - good work

Easy and quick. Great and simple to navigate.

esey to use site

good

thanks

i still don't know...

Quick and easy process. Online shopping cart works well. Only suggestion I would make is allow the consumer one more opportunity to confirm the order after you have entered the credit card information for a last final review.

Shopping was easy with excellent pricing.

Easy to use!

well see

great selection good prices

Wow, not only did I get the best price on the web for a set of Rancho QuickLift and RS9000XL shocks, they were delivered quickly as well. Thanks Autoplicity, I will definitely be shopping with you guys again.

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