Volt Tech Spark Plug Adapter Sleeve Set for Harley EL/FL (14mm to 18mm) 1936–1947

Convert 14mm spark plugs for earlier Harley heads with 18mm threads using precision adapter sleeves. The Volt Tech Spark Plug Adapter Sleeve Set is designed for vintage Harley Davidson EL and FL models from 1936 to 1947. Each sleeve provides an outer thread depth of 11/16 inches to secure a reliable fit, and the kit includes two sleeves plus a Spark Plug Hole Thread Chaser Tool (11/16 inches depth). Made in Taiwan, these parts withstand the rigors of classic maintenance and restoration. The sleeves slip into the spark plug holes to keep plugs properly aligned and engaged, simplifying installation and removal and helping prevent thread damage.

• EL: 1936, 1937, 1938, 1939, 1940
• FL: 1941, 1942, 1943, 1944, 1945, 1946, 1947

• Includes two adapter sleeves
• Outer Thread Depth: 11/16 inches
• Includes Spark Plug Hole Thread Chaser Tool (11/16 inches depth)
• Made in Taiwan

Designed to aid in proper thread engagement and engine performance for classic Harley engines.

Spark plug adapter sleeve kit allows 14mm plugs to be used in earlier heads with 18mm spark plug threads.

The Volt Tech Spark Plug Adapter Sleeve Set is a essential accessory designed specifically for vintage Harley Davidson models including EL and FL series from 1936 to 1945. Crafted with precision, these sleeves feature an outer thread depth of 11/16 inches, ensuring a secure and reliable fit for spark plug installations. Made in Taiwan, this set combines quality manufacturing with durability to withstand the demands of classic motorcycle maintenance and restoration.

Each set includes two adapter sleeves, perfect for ensuring proper spark plug alignment and thread engagement during engine servicing. The sleeves are designed to fit seamlessly into the existing spark plug holes, providing a smooth interface that facilitates easier installation and removal. Whether restoring a vintage Harley or performing routine maintenance, these sleeves help maintain optimal engine performance and prevent thread damage.

Designed for compatibility with a range of Harley Davidson models from the late 1930s to mid-1940s, this accessory set is a must-have for motorcycle enthusiasts and professional mechanics working on classic Harley engines. The set also includes an accessory item: the Spark Plug Hole Thread Chaser Tool with a measurement of 11/16 inches outer thread depth, helping to prepare and clean the threads before installation. Invest in the Volt Tech Spark Plug Adapter Sleeve Set for a precise, durable, and reliable solution to your Harley Davidson spark plug needs.

Features:

• Includes two adapter sleeves for efficient spark plug installation

• Outer Thread Depth: 11/16 inches for a secure fit

• Made in Taiwan for quality and durability

• Compatible with Harley Davidson EL and FL models from 1936 to 1945

• Designed to aid in proper thread engagement and engine performance

Fitment:
Harley Davidson EL 1936
Harley Davidson EL 1937
Harley Davidson EL 1938
Harley Davidson EL 1939
Harley Davidson EL 1940
Harley Davidson FL 1941
Harley Davidson FL 1942
Harley Davidson FL 1943
Harley Davidson FL 1944
Harley Davidson FL 1945
Harley Davidson FL 1946
Harley Davidson FL 1947