3/8" Spark Plug Socket 21mm
3/8" Spark Plug Socket 21mm
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This 3/8" drive spark plug socket has a 21 mm hex opening, a 14 mm rubber insert grip, and a socket depth of 22 mm. The rubber insert holds the plug securely, simplifying single-handed spark plug installation and removal. Compatible with sets TM111, TTESK86, TEFSK57, TM106, TM127, T3839, T3835AF, TTOS16, and T3848.
Also part of 9 tool kits
- T3835AF MECCA PRO 3/8 Drive Socket Set 6pt AF 35 Pieces
- T3839 MECCA PRO 3/8 Drive Socket Set 6pt 39 Pieces
- T3848 MECCA PRO 3/8 Drive Socket and Tool Set mm/AF 48 Pieces
- TEFSK57 Spanner & Socket Set FOAM3 57 Pieces
- TM106 MECCA PRO 1/4, 3/8 & 1/2 Socket Set 106 Pieces
- TM111 MECCA PRO 1/4, 3/8 and 1/2 Drive Socket Set mm/AF 111 Pieces
- TM127 MECCA PRO 1/4, 3/8 and 1/2 Drive Socket and Tool Set mm/AF 127 Pieces
- TTESK86 1/4 & 3/8 Socket Set FOAM4X4 86 Pieces
- TTOS16 Oil Service Set 16 Pieces
Kits shown in red are available to buy.
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Specifications
| Type | Auto Tools |
|---|---|
| Category | Standard Sockets |
| Drive size | 3/8" |
| Part number | M380046-C |
Shipping
Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.
Lifetime warranty
Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.
Returns
Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.
Why Teng Tools?
Swedish Design Since 1985
Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.
Shipped Fast from Texas
US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.
Lifetime Warranty
Something goes wrong? Send a photo and your order number — same-day shipping on replacements.
The Devil Is in the Detail
Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.