Troy Bilt Spark Plug Socket Size(For All Models)

When it comes to maintaining your Troy Bilt equipment, using the correct spark plug socket size is a game changer. This post guide delivers an exhaustive table listing Troy Bilt spark plug socket sizes from A to Z, helping you avoid costly mistakes and keep your engine humming smoothly. Let’s jump in.

Troy Bilt Spark Plug Socket Size

Troy-Bilt Model	Engine Brand	Recommended Spark Plug	Socket Size
TB110	Briggs & Stratton	Champion RJ19LM	13/16 in
TB130	Troy-Bilt 159cc	NGK BKR5ES	13/16 in
TB130 XP	Troy-Bilt 159cc	NGK BKR5ES	13/16 in
TB160 XP	Honda GCV160	NGK BPR6ES	13/16 in
TB200	Briggs & Stratton	Champion RC12YC	13/16 in
TB210	Briggs & Stratton	Champion RJ19LM	13/16 in
TB230	Briggs & Stratton	Champion RJ19LM	13/16 in
TB240	Honda GCV160	NGK BPR6ES	13/16 in
TB270 XP	Briggs & Stratton	Champion RJ19LM	13/16 in
TB280 ES	Honda GCV160	NGK BPR6ES	13/16 in
TB330	Honda GCV160	NGK BPR6ES	13/16 in
TB360	Briggs & Stratton	Champion RJ19LM	13/16 in
TB370	Briggs & Stratton	Champion J19LM	13/16 in
TB370 XP	Honda GCV160	NGK BPR6ES	13/16 in
TB490 XP	Honda GCV190	NGK BPR6ES	13/16 in
TB600	Briggs & Stratton	Champion RJ19LM	13/16 in
TB675 EC	Briggs & Stratton	Champion RJ19LM	13/16 in
TB700	Honda GCV190	NGK BPR6ES	13/16 in
TB742 EC	Briggs & Stratton	Champion RJ19LM	13/16 in
TB775 EC	Honda GCV190	NGK BPR6ES	13/16 in
TB80 EC	Troy-Bilt	Champion RZ7C	5/8 in
TB90 BC	Troy-Bilt	Champion RZ7C	5/8 in
TB1000	Briggs & Stratton	Champion RJ19LM	13/16 in
TB2000	Honda GCV160	NGK BPR6ES	13/16 in
TB3000	Briggs & Stratton	Champion RJ19LM	13/16 in
TB4000	Honda GCV190	NGK BPR6ES	13/16 in
TB5000	Briggs & Stratton	Champion RJ19LM	13/16 in
TB6000	Honda GCV190	NGK BPR6ES	13/16 in
TB7000	Briggs & Stratton	Champion RJ19LM	13/16 in
TB8000	Honda GCV190	NGK BPR6ES	13/16 in
TB9000	Briggs & Stratton	Champion RJ19LM	13/16 in
TB10000	Honda GCV190	NGK BPR6ES	13/16 in
TB30 R	Troy-Bilt	Torch F6RTC	13/16 in
TB42 Snow Blower	Troy-Bilt	Champion RJ19LM	13/16 in
Storm 2410	Troy-Bilt	NGK B2LM	13/16 in
TB22 Trimmer	Troy-Bilt	NGK BPMR7A	3/4 in
TB32 EC Trimmer	Troy-Bilt	Champion RZ7C	5/8 in
TB224 Tiller	Troy-Bilt	Champion CJ8	13/16 in
Horse Tiller	Briggs & Stratton	Champion RJ19LM	13/16 in
Pony Riding Mower	Briggs & Stratton	Champion RC12YC	13/16 in
Bronco Riding Mower	Kohler	Champion RC12YC	13/16 in
Super Bronco XP	Kohler	NGK BKR5E	13/16 in

Related Troy Bilt Spark Plug Chart(Updated For All Models)

How to Find the Correct Socket Size

You can determine your socket size using:

• Owner’s manual
• Model number lookup on Troy Bilt’s official site
• Spark plug inscription
• Trial with spark plug socket set

Tools You’ll Need

• Ratchet wrench
• 5/8″ and 13/16″ spark plug sockets
• Spark plug gapping tool
• Torque wrench (optional but recommended)
• Anti-seize lubricant

Related Kohler Spark Plug Chart(Updated For All Models)

How to Change a Spark Plug on a Troy Bilt Mower

1. Turn off the engine and let it cool.
2. Disconnect the spark plug wire.
3. Use correct socket size to remove old plug.
4. Inspect and gap new spark plug.
5. Apply anti-seize to threads.
6. Install and tighten using correct torque.
7. Reconnect plug wire.

Troubleshooting Common Spark Plug Issues

• Hard starts: Worn or fouled spark plug
• Rough idle: Incorrect gap
• Poor fuel economy: Wrong heat range
• No start: Cracked insulator or failed electrode

Related Ariens Snowblower Spark Plug Chart(For All Models)

FAQ

What size socket for Troy Bilt spark plugs?

Most Troy Bilt lawn mowers and outdoor equipment use either a 13/16-inch or 5/8-inch spark plug socket. The size depends on the engine type:

• 5/8″ socket is common for compact engines (159cc, 173cc).
• 13/16″ socket is typical for larger engines (190cc, 208cc+).

What size socket do I need to remove spark plugs?

The most common socket sizes for removing spark plugs are:

• 5/8 inch (16mm)
• 13/16 inch (21mm)

You’ll also need a spark plug socket, not just any regular socket. These have a rubber insert or magnetic core to hold the plug securely and prevent damage during removal or installation.

What size socket for mower spark plug?

Lawn mowers typically use either:

• 5/8 inch (16mm) or
• 13/16 inch (21mm) spark plug sockets.

The specific size depends on your mower’s engine brand and displacement. Troy Bilt, Honda, Briggs & Stratton, and Kohler engines may vary.

Related Troy-Bilt TB110 Won’t Start(9 Common Problems + Solutions)

How many mm is a spark plug socket?

Spark plug sockets are generally:

• 5/8 inch = 16 mm
• 13/16 inch = 21 mm

So if you’re using metric tools, a 16mm or 21mm socket will typically fit most spark plugs.

What uses 14mm spark plug socket?

A 14mm spark plug socket refers to the thread diameter of the spark plug, not the hex size. It’s common in:

• Motorcycles
• Small engines
• Some modern automotive engines

Note: 14mm thread plugs usually require a 16mm (5/8 inch) socket for removal.

What are popular spark plug socket sizes?

The most popular spark plug socket sizes are:

• 5/8 inch (16mm), Most common for small engines, cars, and mowers.
• 13/16 inch (21mm), Used in larger engines, and older vehicles.
• Less common: 3/4 inch (19mm) and 9/16 inch (14mm)

How many mm is a 13/16 spark plug socket?

A 13/16 inch spark plug socket is approximately 21 mm.

This is used in:

• Many older vehicles
• Some lawn mower engines
• Power equipment like snow blowers and trimmers