Product Description
NPR Replacement Pistons – Standard Size 3.780" (96.0mm) Bore
Set of 8 Dished Pistons w/ Press-Fit Pins & Rings | Fits 1999–2003 5.3L LM7 & L59
Refresh your 5.3L Gen III LS engine with this complete set of NPR OEM-equivalent pistons designed for LM7 and L59 applications. These standard-bore 3.780" dished pistons maintain factory compression and deliver the reliability expected from NPR’s industry-proven manufacturing quality. Ideal for stock rebuilds, daily drivers, towing, and mild performance upgrades, this kit includes pistons, rings, and press-fit wrist pins for a direct and dependable replacement.
Key Features
- Complete 8-Piston Set: Includes eight dished pistons, piston rings, and press-fit wrist pins for a full rebuild solution.
- Standard Bore Size: Precision-machined 3.780" (96.0mm) pistons designed to meet OEM specifications for LM7/L59 engines.
- Dished Piston Design: Maintains factory compression ratio and combustion characteristics for stock or mild builds.
- Durable Construction: Features moly-skirt surface treatment for reduced friction, improved wear resistance, and long service life.
- OEM-Equivalent Reliability: NPR #10-829-0 pistons deliver consistent stock-level performance for work, commuter, or fleet engines.
Engine Fitment
- 1999–2003 LM7 5.3L
- 1999–2003 L59 5.3L
- Also fits early 2004 (verify press-fit rods before purchase)
Applications (5.3L Press-Fit Piston Models Only)
- CADILLAC ESCALADE: 2002–2003
- CHEVROLET AVALANCHE 1500: 2002–2003
- CHEVROLET EXPRESS 1500: 2003
- CHEVROLET EXPRESS 2500: 2003
- CHEVROLET SILVERADO 1500: 1999–2003
- CHEVROLET SILVERADO 2500: 1999–2000
- CHEVROLET SSR: 2003
- CHEVROLET SUBURBAN 1500: 2000–2003
- CHEVROLET TAHOE: 2000–2003
- CHEVROLET TRAILBLAZER: 2003
- GMC ENVOY: 2003
- GMC SAVANA 1500: 2003
- GMC SAVANA 2500: 2003
- GMC SIERRA 1500: 1999–2003
- GMC SIERRA 2500: 1999–2000
- GMC YUKON: 2000–2003
- GMC YUKON XL 1500: 2000–2003
