Product Description
Refresh the right bank of your LB7/LLY with the MAHLE 224-3452WR.020 Piston With Rings. Engineered as an OE-grade .020" overbore assembly for 2001–2005 GM 6.6L Duramax, this kit delivers expansion-controlled stability, compensated ring grooves for proper ring loading, and reliable oil control—ideal for a clean, factory-spec rebuild on cylinders 2-4-6-8.
Fitment
- 2001–2005 Chevrolet Silverado 2500HD/3500HD — 6.6L Duramax LB7/LLY (Right bank: cylinders 2, 4, 6, 8)
 - 2001–2005 GMC Sierra 2500HD/3500HD — 6.6L Duramax LB7/LLY (Right bank: cylinders 2, 4, 6, 8)
 - Also fits select 2001–2005 Express/Savana 2500/3500 with 6.6L Duramax (LB7/LLY) where applicable
 
Cross-Reference / Alternatives (Mahle only)
- Right Bank (STD Bore): MAHLE 224-3452WR (STD)
 - Right Bank (.040 Over): MAHLE 224-3452WR.040
 - Left Bank (.020 Over): MAHLE 224-3451WR.020
 
What’s Included
- Set of four (.020" over) pistons for the right bank (2-4-6-8)
 - Pre-installed rings, piston pins, and clips
 
Why Buy From CPP Diesel
- OE-grade Mahle components curated for Duramax rebuilds
 - Fast shipping and diesel-savvy support
 
FAQ
Is this the correct side?
 Yes—this is a RIGHT-bank (.020" over) set for cylinders 2, 4, 6, 8 on 2001–2005 LB7/LLY.
Do I need to order four pieces?
 This listing is a set for the right bank (4 pistons) with rings, pins, and clips.
What compression ratio does this maintain?
 Standard Duramax compression for LB7/LLY when used with matching left-bank components.
Are the skirts coated?
 Mahle OE replacement design; see Specifications table for coating and dimensional details.
Specifications for Mahle 224-3452WR.020
| Attribute | Value | 
|---|---|
| Brand | Mahle | 
| Part Number | 224-3452WR.020 (Right Bank, .020 Over) | 
| UPC | 27067914231 | 
| GTIN (Pkg Level) | 00027067914231 | 
| Engine Compatibility | 2001–2005 GM 6.6L Duramax LB7/LLY | 
| Orientation | Right Bank (cylinders 2-4-6-8) | 
| Oversize | .020" (0.50 mm) | 
| Ring Thickness (Top / 2nd / Oil) | 3.00 mm / 2.00 mm / 3.00 mm | 
| Compression Height | 49.82 mm | 
| Piston Pin OD | 34.50 mm | 
| Material / Head Type | Aluminum / Bowl | 
| Package Dimensions (WxHxD) | 9.06" × 6.00" × 13.56" | 
| Shipping | Free Shipping | 
| Prop 65 | Not specified by manufacturer. See www.P65Warnings.ca.gov. |