Product Description
Upgrade your LBZ/LMM rebuild with MAHLE’s OE-quality left-bank piston set engineered for .040" over bores on 2006–2010 6.6L Duramax. Rings arrive pre-installed, and each piston features expansion-controlled clearances and a friction-reducing skirt coating for quiet operation, strong sealing, and long service life under towing and tuned use. Mahle 224-3709WR.040 left bank pistons, .040 over Duramax pistons LLY LBZ LMM, GM 6.6L piston kit with rings, coated skirt, CPP Diesel Mahle pistons, UPC 027067914521, GTIN 00027067914521
Fitment
- 2006–2010 Chevrolet Silverado/GMC Sierra 2500HD & 3500HD — 6.6L Duramax LLY/LBZ/LMM
- Bank/Side: Left (driver), cylinders 1-3-5-7
- Size: .040" over (requires properly bored/honed block)
- Includes: (4) pistons with rings mounted, pins & clips
Cross-Reference / Alternatives (MAHLE on CPP Diesel only)
- Right bank – .040: MAHLE 224-3708WR.040
- Left bank – .030: MAHLE 224-3709WR.030
- Left bank – .020: MAHLE 224-3709WR.020
- Left bank – .010: MAHLE 224-3709WR.010
- Right bank – .030: MAHLE 224-3708WR.030
- Right bank – .020: MAHLE 224-3708WR.020
- Right bank – STD: MAHLE 224-3708WR (STD)
Specifications for Mahle 224-3709WR.040
| Attribute | Value |
|---|---|
| Brand | MAHLE |
| Part Number | 224-3709WR.040 (Left, +.040") |
| UPC | 027067914521 |
| GTIN | 00027067914521 |
| Engine Family | GM 6.6L Duramax (LLY/LBZ/LMM), 2006–2010 |
| Bank / Cylinders | Left bank (1-3-5-7) |
| Bore Size | .040" over |
| Includes | (4) pistons with rings mounted, pins & clips |
| Shipping | Free Shipping (ground) |
| Prop 65 | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more. |
FAQ
Is the price per piston or for a full bank? Priced as a complete set of four (4) pistons with rings for the left bank.
Do the rings come pre-installed? Yes—Mahle supplies these with the ring pack mounted, plus pins & clips included. Always verify ring end gaps and orientation per MAHLE/GM specs.
What should I pair this with to rebuild both sides? Add the matching right-bank .040 set (224-3708WR.040) or select the appropriate oversize for each bank.
