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JE Pistons J100F638305 ProSeal Plasma-Moly Piston Ring Set 3.830 in. Bore 6-Cylinder

Part of: JE Pistons Piston Ring Set - 2 Cylinder File Fit

Other options in this family: JE Pistons J100F2-3820-5 JE Pistons J100F8-43605 JE Pistons J10002-3810-5 JE Pistons J140F2-3498 JE Pistons J150F2-3625

Manufacturer

Picture for manufacturer JE Pistons

Part Number

J100F638305
8 reviews
Sale Price

$136.99

Estimated ship date Wednesday, November 11

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Product Details

The JE Pistons J100F638305 ProSeal Premium Race Series Piston Ring Set is a plasma-moly, file-fit ring set designed for 6-cylinder applications with a 3.830-inch (97.28mm) bore.

Ring Construction:

  • Top Ring: Barrel-face, D-wall torsional design with a plasma-moly inlay — combining molybdenum, nickel, chrome, and trace elements for higher temperature resistance, reduced wear, and better ring sealing
  • Second Ring: Taper-face, D-wall reverse torsional design with phosphate coating for reliable oil control and reduced friction
  • Oil Ring: Full seal, flex-vent style for consistent tension and comprehensive oil scraping

Key Specifications:

  • Bore Diameter: 3.830 in. (97.28mm)
  • Ring Thickness: 1/16 in. / 1/16 in. / 3/16 in.
  • Cylinder Count: 6
  • File Fit: Yes
  • Gapless: No
  • Gas Ported: No
  • Coating: Plasma-moly (top ring)
  • Manufacturer Part Number: J100F6-3830-5

JE Pro Seal rings are trusted by top racing teams across NASCAR, NHRA, ALMS, and AMA. Note: ProSeal ring sets are sold as matched sets. The 6th digit of the part number indicates the number of cylinders included in the set (e.g., a part number ending in -5 = 6-cylinder set).

Products specifications

2nd Ring (Heigh/Width/Type)

1 / 16 / 0.178 / IPT

Bore

97.28 mm(3.830 in)

Bore (in)

3.830 in.

Bore (mm)

97.282mm

File Fit

Yes

Gapless

No

Notes

Barrel face D-wall torsional top ring, taper face D-wall reverse torsional second ring with full seal flex vent style oil ring.

Oil Ring (Heigh/Width/Type)

3 / 16 / 0.190 / CUS

Oil Ring Included

Yes

Oil Ring Material

Chrome plated carbon steel

Oil Ring Tension

Standard

Oil Ring Tension Rating

11-12 lb.

Oil Ring Thickness

3/16 in.

Quantity

Sold as a set.

Second Ring Facing Material

Phosphate coated

Second Ring Included

Yes

Second Ring Material

Iron

Second Ring Thickness

1/16 in.

Top Ring (Heigh/Width/Type)

1 / 16 / 0.178 / DMB

Top Ring Facing Material

Plasma-moly

Top Ring Included

Yes

Top Ring Material

Ductile iron

Top Ring Thickness

1/16 in.

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I was apprehensiveness at first to make a major purchase with Autoplicity due to their extremely low price and lack of reviews. I decided to take the chance and I am very glad I did. I made my order on a Monday morning at 0900 eastern time and my product arrived on Wednesday at 3pm. The item was exactly as described and the most astonishing part is that my purchase was released from the factory less than 45 days ago. I was expecting a model that had been sitting on a shelf for the last year and needed to be updated. That was not the case. I will definitely order from Autoplicity again in the future.

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