There isn't a single universal thread size for Honda shift knobs; it varies by model and year. Common thread sizes you may encounter include M8x1.25, M10x1.25, M12x1.25, and some imperial sizes like 3/8-16 or 5/16-18.
Understanding the variability
Honda used different threading standards across generations and markets. OEM shift knobs can screw onto a metric or imperial threaded shank, and the exact size depends on the model, year, and sometimes trim level or dealer-installed options. Because of this, the safe approach is to verify your specific car’s thread size rather than assuming a single standard.
Common thread sizes you might encounter
Below are sizes reported by Honda enthusiasts and aftermarket suppliers. Use it as a guide, but always confirm on your exact car model and year.
- M8x1.25 — a widely cited metric size found on many older Honda models and in various aftermarket knob kits.
- M10x1.25 — another common metric size that appears on different Civics and Accords across generations.
- M12x1.25 — used on some later models and in certain trims; frequently seen with larger-diameter shift knobs.
- Imperial: 3/8-16 UNC — occasionally used in certain markets or aftermarket setups.
- Imperial: 5/16-18 UNC — encountered in some models or as part of adapter options.
Note: There are exceptions; some Honda shifters use adapters or dual-thread options. Always confirm by measuring or checking OEM documentation for your vehicle.
How to determine your exact thread size
To avoid buying the wrong knob, verify your exact thread size before purchasing a replacement. Use the following steps:
- Inspect the shift knob and shifter shaft for any visible thread markings or model identifiers.
- Remove the knob to measure the male thread diameter with calipers, and attempt to estimate the pitch with a thread gauge or by noting the groove spacing.
- Consult the Honda owner's manual or service manual for your specific model/year; OEM parts listings usually specify knob thread size.
- Ask your local Honda dealer or parts retailer for the exact size by model/year, providing your VIN if needed.
- If in doubt, consider a universal adapter kit or a knob with a set screw that accommodates multiple thread sizes.
Once you know the size, you can select a knob or adapter with confidence, ensuring a secure fit and proper grip alignment.
Practical considerations for installation
Thread direction and locking method can affect installation. Some manufacturers use left-hand threads to prevent loosening, while others rely on standard right-hand threads plus a locking mechanism or set screw. Always check for anti-loosening features and follow torque guidelines in the service manual to avoid over-tightening or damage.
Summary
Honda shift knob thread sizes are not uniform across all models and years. Typical sizes you’ll encounter include M8x1.25, M10x1.25, M12x1.25, and some imperial equivalents such as 3/8-16 or 5/16-18. The best course is to verify your specific car’s size via measurement, OEM documentation, or dealer guidance, and use adapters if upgrading. A precise match ensures a secure fit, proper alignment, and safe shifting.
What size is the thread on a 1999 Honda Civic shift knob?
M10x1.5
Thread Size: M10x1. 5.
What size is the thread on a 2019 Honda Civic shift knob?
10x1.5mm
Common Thread Sizes: 10x1. 5mm - Most Honda and Acura. 10x1.
What is the thread pitch of a Honda shift knob?
Thread Pitch: M10 x 1.5"
What size is the thread on a 2012 Honda Civic shift knob?
10x1.5mm
The Thread of this Shift Knob is 10x1. 5mm and Might Fit Other Brands of Vehicles that have the same Shift Knob Thread.