Product Description
MAHLE 224-3709WR.020 is the Left-bank (.020" oversize) piston kit with rings for the 2006–2010 GM 6.6L Duramax (LLY/LBZ/LMM). Built to OE standards with coated skirts and pre-installed rings, pins & clips for an efficient, reliable rebuild on the driver-side (Left) bank.
- .020" overbore (≈0.50 mm)
- Left bank (driver side) – Duramax V-bank specific
- Skirt coating, expansion-controlled design, OE ring groove geometry
- Piston rings pre-mounted; wrist pins & clips included
Fitment
- 2006–2010 Chevrolet/GMC 2500HD & 3500HD, 6.6L Duramax LLY/LBZ/LMM
- Includes Silverado/Sierra, and applicable chassis using 6.6L Duramax
What’s Included
- Set of 4 Left-bank pistons (.020" oversize) with rings pre-installed
- Wrist pins & pin clips
Notes
Pricing/Quantity: CPP Diesel price is for a set of 4 pistons (Left bank).
Cross Reference & Related
- Right-bank companion (.020"): MAHLE 224-3708WR.020 (order separately for Right bank).
- Same application, set-of-4 Left bank (.020")
FAQ
Does this include four pistons?
Yes. This listing on CPP Diesel is for a set of 4 Left-bank pistons with rings, pins, and clips.
Which engines does it fit?
2006–2010 6.6L Duramax LLY, LBZ, and LMM on the Left (driver) bank.
Is .020" the correct oversize?
Choose .020" when your machine shop specifies a 0.020" overbore (≈0.50 mm). Always confirm block machining specs.
Do rings come installed?
Yes—MAHLE supplies these with mounted piston rings, plus pins & clips, ready for assembly.
Do I need the Right bank too?
For a full engine rebuild you typically order the Right-bank set (224-3708WR.020) in addition to this Left-bank set.
