Dualoy Pistons

2006-2010 Duramax 6.6L LBZ/LMM/LLY Dualoy Piston & Ring Kit (7210DKT)

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Size: .25MM
  • About
  • Specs
  • Fits

Dualoy Diesel pistons are cast and machined in-house to maintain the highest level of quality and consistency. All Dualoy pistons feature a high strength top ring carrier to improve strength of the top land, and resistance to the extreme heat of diesel engines. Oil cooling galleries are cast into the pistons, as required depending on the specific application.

Sold As: Piston Set with Rings

Engine Manufacturer: GM

Engine Family: LLY Duramax

VIN Code: D, 2, 6

OE Cross Reference: 97374384-R, 97374385-L

Engine Displacement (Liters): 6.6

Engine Displacement (cubic inches): 403

Bore Size (in): 4.055

Bore Size (mm): 103

Crown (cc): +40.4cc

Compression Ratio: 16.8:1

Top Land: 0.394

Pin Type: Floating

Compression Height IN: 1.96

Oversized: Yes

Stroke (mm): 99


Compression Height MM: 49.8

Bore Diameter IN: 4.055

Oversize: .50mm

Bore Diameter MM: 103

Rod (in): 6.42

Pin Configuration: Offset

Base Number: 7210D

Ring Pack: 3.0K, 2.0mm, 3.0mm

Oversizes: STD.5mm 1.0mm

Rod (mm): 163.068

Model: C&K Series Truck

Year To: 2010

Stroke (in): 3.898

Year From: 2006

Pin Number: 7211D-PP

Pin Diameter (in): 1.358

Pin Diameter (mm): 34.5

Alloy: 332

Year Range: 2006-2010

GM Duramax

2006 - 2010

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PowerHouse Machining was founded with the vision of creating a one-stop-shop for all of your light duty engine needs. We pride ourselves on our industry-leading engine quality, dedication to customer service, and sincere passion for our trade.