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MAHLE 4045MS-15 Piston Ring Set Bore File Fit - 4.040 1.5mm 1.5mm 3.0mm

Part of: MAHLE Piston Ring Set Bore File Fit

Other options in this family: MAHLE 4005MS-15 MAHLE 4035MS-15 MAHLE 4065MS MAHLE 3910MS-15 MAHLE 4505MS

Manufacturer

Picture for manufacturer MAHLE

Part Number

4045MS-15
7 reviews
Sale Price

$129.93

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The MAHLE 4045MS-15 piston ring set is engineered for 4.040" bore engines with a +.005" oversize tolerance. This file-fit ring set features standard tension construction and a 1.5mm, 1.5mm, 3.0mm ring configuration designed to optimize sealing and minimize friction for improved engine performance.

Ring Configuration:

  • Top Ring: 1.5mm ductile iron with plasma moly coating and barrel face profile for superior wear resistance
  • Second Ring: 1.5mm cast iron reverse twist design for enhanced oil control
  • Oil Ring: 3.0mm three-piece standard tension design for consistent cylinder wall sealing

Key Features:

  • 4.040" bore diameter with .005" oversize tolerance
  • File-fit design allows precise end gap adjustment during installation
  • Ultra-flat ring flanks maximize ring-to-piston groove sealing
  • Plasma moly top ring coating reduces friction and increases durability
  • Standard tension oil ring for reliable lubrication control

MAHLE utilizes advanced piston ring simulation and computer development tools to engineer rings that reduce parasitic friction losses, delivering measurable horsepower gains. The precision manufacturing process ensures consistent ring geometry for optimal sealing throughout the engine's operating range.

Products specifications

Bore (in)

4.040 in.

Bore (mm)

102.616mm

File Fit

Yes

Gapless

No

Oil Ring Included

Yes

Oil Ring Material

Stainless steel

Oil Ring Tension

Standard

Oil Ring Thickness

3.0mm

Quantity

Sold as a set.

Second Ring Facing Material

Cast iron

Second Ring Included

Yes

Second Ring Material

Cast iron

Second Ring Thickness

1.5mm

Top Ring Facing Material

Plasma-moly

Top Ring Included

Yes

Top Ring Material

Ductile iron

Top Ring Thickness

1.5mm

Prop 65

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

Piston Ring Thickness

1.5mm, 1.5mm, 3.0mm

quick response and unbelievably CHEAP prices.

Very happy with customer service at autoplicity! Everyone helped me gather the much needed information to track my purchase! Congrats autoplicity!

Excellent service, quick ship. An easy transaction.

Ordered a set of 5 steel wheels, distributor messed up and only sent me 4. 5th wheel is taking a good couple weeks to arrive due to the distributor messing up the shipment. Autoplicity did make things right and I can honestly say now I would recommend them.

- Updated review -<br>Autoplicity.com contacted me after my original review and admitted to making a mistake with my order. They have refunded my shipping and I am happy now.<br><br>- Original review -<br>After 18 days the part finally arrived. The filter appears to have been sent directly from K&N, but I ordered on the 20th of June, yet the packing date that K&N Engineering Inc. shows is July 3rd.

Very pleased with Autoplicity's fast and efficient service. The part I ordered fit and looked great. Will definitely consider Autoplicity for future orders. Thanks.

some items need better description. for instance, project mu rotors for a Mazda RX-7 (pt# PCRDZF3001) , am I paying for a single rotor or a pair when i purchase it? and uhh.. when i bought front shocks, i got a pair that was one model (white) FR and a pai

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