Product Description
Bring your LB7/LLY back to tight, factory-clearance performance with the MAHLE 224-3451WR.040 Piston With Rings – Left Bank. Engineered for the 2001–2005 GM 6.6L Duramax, this .040" oversize set restores compression, oil control, and durability after a proper re-bore and hone. Each piston arrives matched with rings, pins, and clips so you can reassemble with confidence.
Fitment
- 2001–2005 GM 6.6L Duramax LB7 / LLY
- Left bank orientation (cylinders 1–3–5–7)
- Requires .040" overbore; verify final bore and finish with your machinist
Cross-Reference / Alternatives (Mahle only)
- Right Bank Match (.040): MAHLE 224-3452WR.040
- Left Bank (.020): MAHLE 224-3451WR.020
- Left Bank (STD): MAHLE 224-3451WR (STD)
- Matching LB7 Ring Sets (.010–.040): MAHLE 41909.04, 41909.03, 41909.02, 41909.01
What’s Included
- Four (.040 over) left-bank pistons
- Pre-installed rings, pins, and clips
Why CPP Diesel
- Diesel-focused support and fast shipping
- Mahle coverage curated to match LB7/LLY rebuild paths
FAQ
Is this a single piston or a bank set?
This listing is a left-bank set with four pistons, rings, pins, and clips.
Do I need machine work?
Yes. These are .040" oversize. Your block must be bored and honed to the correct final size and surface finish.
What ring thicknesses come in this set?
Standard ring pack for this application; verify clearances during assembly.
What should I pair on the right bank?
Use the matching right-bank .040 set (224-3452WR.040) so both sides balance properly.
Specifications for Mahle 224-3451WR.040
| Attribute | Value |
|---|---|
| Brand | Mahle |
| Part Number | 224-3451WR.040 (Left) |
| UPC | 027067914217 |
| GTIN | 00027067914217 |
| Engine Compatibility | 2001–2005 GM 6.6L Duramax LB7 / LLY |
| Orientation | Left bank (cyl. 1-3-5-7) |
| Oversize | .040" (requires machine work) |
| Shipping | Free Shipping |
| Prop 65 | Not specified by manufacturer. See www.P65Warnings.ca.gov. |
