Engines and Components› Engines, Blocks and Components

Dart

IRON BIG M - 1 PIECE REAR

$4,693.36

SKU: D00Q 31273354V

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

Cast Iron, Gen V, 1pc Rear Seal, 10.200 Deck Height, 4.250 Bore. The Dart Gen V and VI style block offers versatility for various engine combinations with deck heights up to 10.200" and bore sizes up to 4.310". Features a priority main oiling system, 4-bolt main caps, and options for different lifter styles and rear seal designs. Includes coated cam bearings, freeze plugs, and dowel pins.

Fitment

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

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Specifications

BrandDart
Part NumberD00Q 31273354V

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.

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