Engines and Components› Camshafts and Valvetrain

ENGINEQUEST

181M Guide Plate Set

$34.44

SKU: EQ-GP181M

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The EngineQuest EQ-GP181M is a set of four guide plates engineered to maintain proper valve train geometry in Small Block Chevy and 181 3.0L GM 4-Cyl engines. These components are crucial for ensuring the rocker arm remains centered on the valve tip, preventing premature wear and potential damage. Constructed from a durable combination of cast iron and aluminum, the EQ-GP181M guide plates are built to withstand the rigors of engine operation. This set is designed to work with specific EngineQuest cylinder head part numbers, including EQ-CH181M, EQ-CH181MA, EQ-CH305B, and EQ-CH305BA. Please note that the EQ-SIS350 screw-in studs required for installation are sold separately. Proper installation is essential for optimal performance and longevity of the valve train components.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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

BrandENGINEQUEST
Part NumberEQ-GP181M
CategoryEngines and Components

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

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

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy