Name: Sealed Power H521ACP 40 "Speed Pro" Engine Piston Cast Set
SKU: h521acp40
Price: 410.94 USD
Availability: InStock

SEALED POWER part description

California Proposition 65 Warning

WARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov. (Read more)

Product Description

Engine Piston Set

Application Summary

Performance Engine Performance Performance (Aspiration: Naturally Aspirated & Cylinder Head: OHV & Liter: 3.8 & Engine(ci): 231 & Cylinder: 6 & Block: V & Bore(in): 3.800 & Stroke(in): 3.400 & Valves: 12 & Fuel: GAS); 1979-1980 Buick Century (Aspiration: Turbocharged & Engine Designation: LC8 & Cylinder Head: OHV & Liter: 3.8 & Engine(cc): 3800 & Engine(ci): 231 & Cylinder: 6 & Block: V & Bore(in): 3.80 & Bore(mm): 96.5 & Stroke(in): 3.40 & Stroke(mm): 86.4 & Engine VIN: 3 & Valves: 12 & Ignition: Distributor-Breakerless & Fuel: GAS & Engine Version: Buick); 1978-1980 Buick LeSabre (Aspiration: Turbocharged & Engine Designation: LC8 & Cylinder Head: OHV & Liter: 3.8 & Engine(cc): 3800 & Engine(ci): 231 & Cylinder: 6 & Block: V & Bore(in): 3.80 & Bore(mm): 96.5 & Stroke(in): 3.40 & Stroke(mm): 86.4 & Engine VIN: 3 & Valves: 12 & Ignition: Distributor-Breakerless & Fuel: GAS & Engine Version: Buick); 1978-1987 Buick Regal (Aspiration: Turbocharged & Engine Designation: LC5, LC8, LM9, LC2 & Cylinder Head: OHV & Liter: 3.8 & Engine(cc): 3800 & Engine(ci): 231 & Cylinder: 6 & Block: V & Bore(in): 3.80 & Bore(mm): 96.5 & Stroke(in): 3.40 & Stroke(mm): 86.4 & Engine VIN: G, 3, 8, 9, 7 & Valves: 12 & Ignition: Distributor-Breakerless, Distributorless & Fuel: GAS & Engine Version: Buick); 1979-1985 Buick Riviera (Aspiration: Turbocharged & Cylinder Head: OHV & Liter: 3.8 & Engine(cc): 3800 & Engine(ci): 231 & Cylinder: 6 & Block: V & Bore(in): 3.80 & Bore(mm): 96.5 & Stroke(in): 3.40 & Stroke(mm): 86.4 & Valves: 12 & Ignition: Distributor-Breakerless & Fuel: GAS & Engine Version: Buick); 1980-1981 Chevrolet Monte Carlo (Aspiration: Turbocharged & Engine Designation: LC8 & Cylinder Head: OHV & Liter: 3.8 & Engine(cc): 3800 & Engine(ci): 231 & Cylinder: 6 & Block: V & Bore(in): 3.80 & Bore(mm): 96.5 & Stroke(in): 3.40 & Stroke(mm): 86.4 & Engine VIN: 3 & Valves: 12 & Ignition: Distributor-Breakerless & Fuel: GAS & Engine Version: Buick)

Features & Benefits

Exclusive higher-strength FM-425 alloy with 16.5 percent silicon finely dispersed throughout the material
Sophisticated "barrel" profiles help optimize oil wedge between skirt and wall.
Piston skirts protected by next-gen DUROSHIELD(R) coating.
TACTM ring groove geometry
Weight matched to +/- 2 grams.
Machined valve reliefs and circlip grooves; LR-63 lock rings for floated applications

Product Attributes

Oversized	Yes
Top Compression Ring Thickness	0.0781 IN
Second Compression Ring Thickness	0.0781 IN
Oil Ring Thickness	0.1875 IN
Assembly Lubricant Included	No
Bore Diameter	3.840 IN
Piston Material	Hypereutectic
9607	1.800 IN
Dome Volume CC	-24.0
Head Illustration	28
Head Type	.255 dish; DUROSHIELD skirt coated piston
Lock Ring	N/R
Minimum Clearance	.0015
Oversize Inch	.040
Part Description	Engine Piston
Pin Diameter (Inch)	0.939
Pin Type	P
Pin Weight Gram	156
Weight W Pin Gram	682
Weight w/o Pin Gram	526

Additional Information

Country of Origin (Primary)	IN
Canadian Harmonizing Tariff Code	8409910010
Harmonized Tariff Code (HTS)	8409915085
UPC	00614046686274

Part Interchanges

Speed-Pro® is the go-to brand not only for racers and performance enthusiasts but also for those who are cruising down the road day in day out. With its engineering expertise, advanced technologies, and industry-leading manufacturing facilities and techniques, Speed-Pro sets the bar higher for other manufacturers of pistons, engine bearing parts, and performance engine components. The engine solutions from Speed-Pro are meticulously designed and crafted to boost horsepower production and make engine rebuild an easy feat. Since its establishment, this brand has continuously improved and refined its operations and quality control measures to maintain high quality standards and satisfy customers’ requirements and demands.