Air Hold Adapter Set With 1/4" NPT ,14mm, & 18mm Adapters for Spark Plug Hole

Name: Air Hold Adapter Set With 1/4" NPT ,14mm, & 18mm Adapters for Spark Plug Hole
Brand: PROFORM
SKU: 778-67400
Price: 11.99 USD
Availability: InStock

^$11⁹⁹

1 left in stock

Ships on Nov 02, 2026

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Air Hold Adapter Sets

1/4" NPT ,14mm, & 18mm Adapters for Spark Plug Hole
Holds Up Valves While You Work

Now that you have the PROFORM Valve Spring Tester you'll need a set of PROFORM Air Hold Adapters to remove your springs with the heads on the engine. It's a simple 3-step process: screw the air hold adapter into your spark plug hole, attach air fitting, and then an air hose. The air pressure will hold up your valves while you get to work!

Part TypeEngine Compression Test Gauge Adapter

Product LineProform Air Hold Adapter Set

BrandPROFORM

Package Height2.0

Package Width5.0

Package Length8.0

Weight0.27 PG

Part CategoryAccessories

Spark Plug Adapter Thread Size (Mm)14, 18

QuantitySold as a kit

Part FitmentUniversal

Vendor Part Number67400

Package Qty1

Package TypeEA

Some parts are not legal for use in California or other states with similar laws / regulations

Air Hold Adapter Set With 1/4" NPT ,14mm, & 18mm Adapters for Spark Plug Hole

⚠️ Warning

Motor Vehicles

Tools

Electrical Cords