Engines and Components› Engines, Blocks and Components

Dart

SBC IRON BLOCK LS NEXT GEN II FULLY SKIRTED 9.450IN DECK 4.125IN BORE L

$6,389.26

SKU: D00Q 31837221-WW1

In Stock
In Stock
Ships by Jun 12
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The Dart 31837221-WW1 is an LS Next cast iron engine block with Cleveland mains, a 9.450 deck, and a 4.125 bore.

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

BrandDart
Part NumberD00Q 31837221-WW1

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