Engines and Components› Engines, Blocks and Components
Dart
SBC IR/BLK 4.5 9.075 4.180 350 50 C
SKU: D00Q 31521343
Professional / shop required
Description
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
| Brand | Dart |
| Part Number | D00Q 31521343 |
Videos
Dart University, Prepping Blocks
Lykins Motorsports Dart/World Products Block Comparo
Full Dart Iron Eagle 2JZ Long Block Assembly | When is it Right for you? | RS Garage
What is Priority Main Oiling?
Inside Dart’s LS Next Iron Block: Choosing the Right Block for Your Next Build
Dart University: How to Identify Dart's Blocks and Heads
Dart Offers Pre-Assembled Short-Blocks for DIY Builders!
Dart Ford Engine Blocks
Dart University, Head Stud Installation
A Look Inside Dart's Big M Pro Engine Block
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