Mahle 42147CP Chrome Piston Ring Set for 2001-2005 Honda Civic DX/EX/HX/LX 1.7L

Vehicle Fitment

• 2001-2005 Honda Civic DX/LX/VP (SOHC, 1.7L L4, D17A1)
• 2001-2005 Honda Civic EX (SOHC VTEC, 1.7L L4, D17A2)
• 2001-2005 Honda Civic HX (SOHC VTEC-E, 1.7L L4, D17A6)
• 2004-2005 Honda Civic GX (SOHC CNG, 1.7L L4, D17A7)
• 2001-2005 Acura 1.7 EL (SOHC VTEC, 1.7L L4, D17A2) - Canada only

Fitment Notes

• Fits standard (STD) bore of 2.953 in. (75.0 mm) only - measure bore before ordering
• Does not fit 2001-2005 Honda Civic Si (EP3) - Si uses K20A3 engine
• Sold as 4 sets (complete set per cylinder, 4-cylinder engine)

Features

• Chrome face coating for enhanced wear resistance and extended service life
• SAE 9254 high alloy steel base material for superior tensile and yield strength
• Barrel-faced top compression ring for improved sealing and reduced blow-by
• CNC-controlled gap chamfer on compression rings optimizes ring seating
• Reverse twist intermediate ring design provides better groove side sealing
• CP-20 oil ring assembly with exclusive 20-degree ear angle for maximum side seal
• Pre-lapped finish virtually eliminates break-in time for immediate seating
• Optimized ring tension reduces friction while maintaining long-term durability

Specifications

• Bore Size: 2.953 in. (75.0 mm) - Standard
• Top Compression Ring Thickness: 1.0 mm
• Second Ring Thickness: 1.5 mm
• Oil Ring Width: 2.0 mm
• Engine Type: L4 (4-Cylinder)
• Ring Coating: Chrome
• Quantity: 4 sets (1 complete set per cylinder)

Included Components

• 4x Top Compression Ring (chrome, 1.0 mm)
• 4x Second Compression Ring (reverse twist, 1.5 mm)
• 4x CP-20 Oil Ring Assembly (3-piece, 2.0 mm)

Product Description

The Mahle 42147CP is a premium chrome piston ring set engineered specifically for the Honda 1.7L D-Series four-cylinder engine found in 2001-2005 Civic models. Designed to OE form, fit, and function, these rings restore combustion sealing, reduce oil consumption, and recover lost compression in worn or rebuilt engines. The chrome face coating combined with SAE 9254 high alloy steel construction delivers outstanding hardness and fatigue resistance, making this set well-suited for both daily drivers and performance street builds.

Each set includes a pre-lapped top compression ring, a reverse-twist second ring for superior oil control, and a CP-20 three-piece oil ring assembly with Mahle's exclusive 20-degree ear angle for a tighter side seal in the oil ring groove. The rings are sold as four complete cylinder sets, covering all four bores in a standard D17A1, D17A2, D17A6, or D17A7 engine at the standard 75.0 mm bore. Always measure the cylinder bore before ordering - oversize variants are available for bores that have been machined.