Engines and Components Pistons and Piston Rings

CP Pistons

CP Piston BRS Small Block Chrysler 4.030 Bore 4.000 Stroke 6.123 Rod Set Of 8 (MTO Non-Cancel)

$1,016.40

SKU: C00A BM4040-030

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

Part #: BM4040-030

MIA's Description

CP-Carrillo small block Chrysler Bullet pistons, made in the USA from 2618 forgings. Includes 1.5mm steel gas nitride top ring, 1.5mm Napier second ring, 3.0mm oil ring, and .984 x 2.500 pins with .150 wall standard. Compression Ratio w/68cc head 9.5:1. SB Chrysler 408 18°, 4.030 Bore, 4.000 Stroke, 6.123 Rod, 1.427 Compression Height, -17.8cc Dish. Advertised Weight 467 grams. Set of 8 Pistons and Rings Included. Normally Aspirated.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCP Pistons
Part NumberC00A BM4040-030

Videos

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy