Engines and Components› Camshafts and Valvetrain

Dart

GUIDE - 2.100-.442-11/32 MB (+.003)

$29.65

SKU: D00Q 63121212+.003

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

Moderate — 2–4 hours

Description

The Dart 63121212 is a manganese bronze valve guide designed for optimal performance in extreme racing applications. It is an OE-style replacement intended for use with Dart cylinder heads, including models like Iron Eagle, Big Chief, Pro 1, and Pro 1 Platinum.

This valve guide features specific dimensions: a 0.344 in. inside diameter, a 0.439 in. outside diameter, and a 2.000 in. length. It is designed exclusively for use with 11/32 in. diameter intake valves.

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 63121212+.003

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