Home / Shop / JE Pistons Premium Race Series Piston Rings J70008-4020-5 Rings, Plasma-moly, 4.020 in. Bore, 0.043 in., 0.043 in., 3.0mm Thickness, 8-Cylinder, Set

JE Pistons Premium Race Series Piston Rings J70008-4020-5 Rings, Plasma-moly, 4.020 in. Bore, 0.043 in., 0.043 in., 3.0mm Thickness, 8-Cylinder, Set

SKU: JEPJ70008-4020-5

Piston Rings

JE Pistons

JE Pistons Premium Race Series Piston Rings J70008-4020-5 Rings, Plasma-moly, 4.020 in. Bore, 0.043 in., 0.043 in., 3.0mm Thickness, 8-Cylinder, Set

SKU: JEPJ70008-4020-5

Piston Rings

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

JE Piston Rings are designed to maximize horsepower through precision sealing of combustion pressure. They are offered in a huge selection of sizes, various materials, and in multiple thicknesses to suit a wide variety of engines. JE Pistons also offers an array of custom piston ring services including back cutting, dyke cutting, lapping, grinding, and PVD coating. These services, the same used by top NHRA Pro Stock and NASCAR teams, are now available to the public and offer tremendous gains in durability, power through reduced friction, and improved ring seal.

Part Type

Engine Piston Ring Set

Data: v4.2 - Upd: 2026-10-14 10:58:56

Features

Multiple high-end materials to suit street and racing applications; Precision lapping and other custom services available; Multiple ring face styles and coatings

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: J70008-4020-5
Product Attributes - Part Type: Piston Rings
Product Attributes - Product Line: JE Pistons Premium Race Series Piston Rings
Product Attributes - UPC: 193564222329
Product Attributes - Bore (in.): 4.020 in.
Product Attributes - Bore (mm): 102.108mm
Product Attributes - File Fit: Yes
Product Attributes - Gapless: No
Product Attributes - Gas Ported: No
Product Attributes - Top Ring Included: Yes
Product Attributes - Top Ring Thickness: 0.043 in.
Product Attributes - Top Ring Material: Ductile iron
Product Attributes - Top Ring Facing Material: Plasma-moly
Product Attributes - Second Ring Included: Yes
Product Attributes - Second Ring Thickness: 0.043 in.
Product Attributes - Second Ring Material: Iron
Product Attributes - Second Ring Facing Material: Phosphate coated
Product Attributes - Oil Ring Included: Yes
Product Attributes - Oil Ring Thickness: 3.0mm
Product Attributes - Oil Ring Tension: Low
Product Attributes - Oil Ring Tension Rating: 9-10 lb.
Product Attributes - Oil Ring Material: Carbon steel
Product Attributes - Oil Ring Facing Material: Chrome
Product Attributes - Quantity: Sold as 8 sets.
Product Attributes - Notes: Barrel face back cut torsional top ring, taper face back cut reverse torsional second ring with full seal flex vent style oil ring.

Reference Information

Brand Name/s	JE Pistons
StreetFX SKU	jepJ70008-4020-5
SFX Item ID	4809297
Supplier Item Code	4809297
Manufacturer SKU	J70008-4020-5
Manufacturer UPC	193564222329
Alternative References	3.0mm, 8-Cylinder