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![Spark Plug Indexing Tool for 14 mm and 18 mm Threads [Red Anodized Aluminum]](https://www.jegs.com/images/mini_750/700/778/778-66795.jpg)
Vehicle Info NeededPROFORMPART NUMBER: 778-66795
Spark Plug Indexing Tool for 14 mm and 18 mm Threads [Red Anodized Aluminum]
$1399
1 left in stock
Ships on Oct 26, 2026
Lowest Price GuaranteeSpark Plug Indexing ToolFits 14 mm and 18 mm Spark Plug Threads Positions Plug Electrode Away From Piston Dome Aluminum Red Anodized Finish Sold Individually
High compression engines run better with the spark plugs indexed, so the ground strap faces the right direction and the electrode cannot touch a domed piston. This aluminum indexing tool fits both 14 mm and 18 mm plug threads so each plug can be marked and positioned before final installation.
Proform 66795 Spark Plug Indexing Tool Features:
- Fits 14 mm and 18 mm spark plug threads
- Index plugs to clear piston domes in high compression engines
- High-quality aluminum construction
- Red anodized finish
- Sold individually
- Spark plug indexing is now made simple with this Proform Indexing Tool. It's no surprise that high compression engines run better when the spark plugs have been indexed. Spark plugs can now be properly set so there is no piston dome interference. This extremely helpful tool is inexpensive and a must have for any engine builder or mechanic.
Part TypeSpark Plug Indexing Tool
Product LineProform Spark Plug Indexing Tool
BrandPROFORM
Package Height1.0
Package Width5.0
Package Length7.5
Weight0.21 PG
Part CategoryAccessories
Spark Plug Thread Size (Mm)14
QuantitySold individually
Part FitmentUniversal
Vendor Part Number66795
Package Qty1
Package TypeEA
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