JE Pistons 400 Small Block 18 Degree Dome 213121R Pistons, Single - SBC DOME 18DEG

SKU: JEP213121R

Pistons

JE Pistons

JE Pistons 400 Small Block 18 Degree Dome 213121R Pistons, Single - SBC DOME 18DEG

SKU: JEP213121R

Pistons

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.

We accept

Description

JE Pistons 400 small block 18 degree dome pistons feature a new dome profile to match a wider variety of 18 degree heads. They're designed to fit your high-compression, high-horsepower, 17/18 degree dirt late model engine. They have smooth flowing domes for optimum flame travel and angle milled head compatibility. New valve reliefs will accommodate larger valves and long-duration, tight lobe separation cams. These pistons utilize dedicated left and right hand forgings and accept 1/16, 1/16, 3/16 rings.

Part Type

Pistons

Data: v4.2 - Upd: 2026-10-14 11:03:39

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: 213121R
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: JE Pistons 400 Small Block 18 Degree Dome Pistons
Product Attributes - UPC: 193564192684
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.145 in.
Product Attributes - Bore (mm): 105.283mm
Product Attributes - Stroke: 3.750 in.
Product Attributes - Engine Stroke Type: Stock
Product Attributes - Actual Engine Displacement: 6.6L/405
Product Attributes - Rod Length: 6.000 in.
Product Attributes - Piston Style: Dome, with two valve reliefs
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.125 in.
Product Attributes - Piston Head Volume (cc): +3.30cc
Product Attributes - Wrist Pin Style: Press-fit or floating
Product Attributes - Wrist Pin Retainers Included: Yes
Product Attributes - Wrist Pin Included: Yes
Product Attributes - Pin Diameter (in.): 0.927 in.
Product Attributes - Piston Ring Thickness: 0.064 in. x 0.064 in. x 0.218 in.
Product Attributes - File Fit: No
Product Attributes - Gapless: No
Product Attributes - Top Ring Thickness: 0.064 in.
Product Attributes - Second Ring Thickness: 0.064 in.
Product Attributes - Oil Ring Thickness: 0.218 in.
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Designed to fit right exhaust valve orientation. Oil rail support included.

Reference Information

Brand Name/s	JE Pistons
StreetFX SKU	jep213121R
SFX Item ID	4804543
Supplier Item Code	4804543
Manufacturer SKU	213121R
Manufacturer UPC	193564192684
Alternative References	18DEG

Compatibility

Application Data

Make	CHEVROLET
Beginning Year	1970
Ending Year	1980
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	6.6L/400
Application Notes	Designed to fit right exhaust valve orientation. Oil rail support included.