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Shifter Thread Sizes

Shift Knob Thread Sizes

The information provided on this page is to be used as a general guide. Thread sizes may vary depending on make and model of vehicle. Please measure the threads on your shifter prior to ordering. If you have any questions please contact us via e-mail or toll free at 866-906-7801 or 717-741-2665.

Performance Aftermarket Shifters
B&M™ (All models except Quick Click™): 1/2 - 20
B&M Quick Click™: 1/2 - 13
Barton - Camaro Shifter™ before 2013: 3/8 - 16
Barton - Camaro Shifter™ Flat Stick 2013 and newer: 12mm x 1.25
Barton - Camaro Factory Adapter™ 2013 and newer: 3/4 - 16
Barton - Challenger Shifter™: 12mm x 1.25
Barton - GT500 Shifter™: 10mm x 1.25
Barton - Mustang Shifter 2011BM-1™: 12mm x 1.25
EMPI Trigger Shifter™: 3/8 - 24
Ford Racing Short Shifter™ for '05 to '09 GT: 3/8 - 16
Ford Racing Short Shifter™ for '07 to '09 GT500: 3/8 - 16
Gennie Shifter™: 5/16 - 18
Gennie Shifter™ Commander: 7/16 - 20
Gennie Shifter™ Lo-Dapt™: 3/8 - 16
Hurst™ - 2016-17 Camaro Gen 6 Billet/Plus P/N:3916031: 9/16-18
Hurst™ - Auto/Stick1, Auto/Stick3, Billet/Plus, Competition Plus(newer): 3/8 - 16
Hurst™ - Pro-Matic, V-Matic, Vertical Gate (1987 and later): 3/8 - 16
Hurst™ - Competition/Plus (older), Indy Matic I, Indy 3 Speed, Indy SSA, Saf-T-Trigger: 3/8 - 24
Hurst™ - Quarter Stick, Quarter Stick II: 7/16 - 20
Hurst™ - Pro-Matic, V-Matic, Vertical Gate (all prior to 1987): 1/2 - 13
Lenco™: 5/16 - 18
Lokar™: 3/8 - 16, 3/8 - 24
Long™: 7/16 - 20
Lou's Short Stick™ - Camaro / Firebird 1993-2002: 16mm x 1.50
Lou's Short Stick™ - Dodge Challenger 2015 and newer: 16mm x 1.50
Lou's Short Stick™ - Pontiac GTO 2004-06: 16mm x 1.50
LSR Performance™ - Tri-Ax Short Throw: 12mm x 1.75
McLeod™: 3/8 - 24
MGW Camaro Short Throw Shifter™: 12mm x 1.75, 16mm x 1.50
MGW Camaro Generation 5 Short Throw Shifter™: Non-Threaded
MGW Camaro Retro Shaft Handle™: 12mm x 1.75
MGW Corvette Generation 5™: 9/16 - 18
MGW Corvette Generation 6™: Non-Threaded
MGW Flat Stick™: 3/8 - 16
MGW Mustang Short Throw Shifter™: 12mm x 1.25, 12mm x 1.75
MGW Mustang GT500 Shifter™: 12mm x 1.25, 12mm x 1.75, 10mm x 1.25
Modern Performance Dodge Dart Short Throw Shifter™: Requires our Dodge Dart Shift Knob Adapter

Mopar Short Throw Stick for '09-'11 Dodge Challenger™: 3/8 - 16
Mr. Norms Garage - Dodge Challenger Shifter Stick™: 7/16 - 20
MTI Racing Six Shooter™: 9/16-18
Pro 5.0™: 12mm x 1.75
Roush Mustang Short Throw™: 12mm x 1.25
Scat™- Drag Fast: 3/8 - 16
Serco™: 1/2 - 13
Shelby American™ - Generation 1 (up to 2011): 12mm x 1.75
Shelby American™ - Generation 2 (introduced in 2011): 12mm x 1.25
Steeda™ Tri-Ax '01 to '04: 12mm x 1.75
Steeda™ '05 to '10: 12mm x 1.75
Steeda™ '11 to '14: 12mm x 1.25
TCI Fast-Gate™: 7/16 - 20
TCI Street Fighter™: 7/16 - 20
TCI Street Fighter for '05-'08 Mustang™: 3/8 - 16
Winters™ - Sidewinder (Standard): 1/2 - 13

Motorcycles
Harley Davidson­™: 3/8 - 24
Indian™: 3/8 - 24

Domestic Vehicles
Buick Grand National™ - Requires our universal automatic shifter adapter kit
Cadillac CTSV™ - manual 2005: Non-threaded, requires a non-threaded adapter kit, call for options
Chevrolet Blazer™ - manual 1973: 3/8 - 24
Chevrolet Blazer™ - transfer case 1973: 7/16 - 20
Chevrolet Camaro™ - 1967 to 1968: 5/16 - 18
Chevrolet Camaro™ - 1969 to 1981: 3/8 - 16
Chevrolet Camaro™ - manual 1982 to 2002: 16mm x 1.50
Chevrolet Camaro™ - manual 2010 to 2012: Non-threaded, requires a non-threaded insert with set screws and a Camaro Boot Retainer
Chevrolet Camaro™ - manual 2013 to 2015: Requires a special Camaro Adapter, call for information
Chevrolet Camaro™ - manual 2016 to 2017: Requires a special Camaro Adapter, call for information
Chevrolet Chevelle™ - 4 speed: 9/16 - 18
Chevrolet Chevy II™ - 4 speed: 9/16 - 18
Chevrolet Corvair™ through 1963: 5/16 - 18
Chevrolet Corvette™ C1 - 1953 to 1962: 3/8 - 16
Chevrolet Corvette™ C2 - 1963 to 1967: 5/16 - 18
Chevrolet Corvette™ C3, C4, C5 - manual 1968 to 2004: 9/16 - 18
Chevrolet Corvette™ C3, C4, C5 with Reverse Lockout on Shifter - manual 1968 to 2004: 9/16 - 18 Recessed for Reverse Lockout
Chevrolet Corvette™ C6 - manual 2005 to 2013: Requires a special C6 adapter, call for information
Chevrolet Corvette™ C7 - manual 2014 and newer: Requires a special C7 adapter, call for information
Chevrolet HHR™ - manual: Non-threaded, requires our non-threaded insert w set screws
Chevrolet Impala Sport Coupe™ - 1959 4 speed: 5/16 - 18
Chevrolet Impala™ - 1964 4 speed: 9/16 - 18
Chevrolet K10™ Truck manual - 1967 to 1972: 3/8 - 24
Chevrolet K10™ Truck transfer case - 1967 to 1972: 7/16-20
Chevrolet K3500™ Truck - 1993: 7/16 - 14
Chevrolet S10™ Truck - 1992: 10mm x 1.50
Chevrolet S10™ Truck - 1997: Non-threaded, requires a non-threaded adapter kit or a non-threaded insert with set screws
Chevrolet Sonic™ - manual: Non-threaded, requires our non-threaded insert w set screws
Chevrolet SSR™ - manual: Non-threaded, requires our non-threaded insert w set screws
Chevrolet™ Truck - 1936 to 1946: 3/8 - 24
Chevrolet™ Truck - 1967 to 1972: 3/8 - 24
Chrysler™ - manual: 8mm x 1.25
Dodge 1966 to 1968 Inland Shifter: 9/16-18 Recessed for Reverse Lockout
Dodge Challenger™ 2008 - manual: 8mm x 1.25
Dodge Challenger™ 2008 - 2014 - automatic: Requires our Dodge Charger 2006-14 & Challenger 2008-14 Automatic Shift Knob Adapter
Dodge Challenger™ 2009 - 2014 - manual: Pistol Grip
Dodge Challenger™ 2015 and newer - automatic: Requires our Universal Automatic Shifter Adapter
Dodge Challenger™ 2015 and newer - manual: Requires our Dodge Challenger R/T, Scat Pack, SRT and Hellcat 2015 and Newer Manual Shift Knob Adapter
Dodge Charger™ newer - automatic: Requires our Dodge Charger 2006-14 & Challenger 2008-14 Automatic Shift Knob Adapter
Dodge Dart™ - prior to 1976: 3/8 - 24
Dodge Dart™ - 2012 and newer: Requires our Dodge Dart Shift Knob Adapter
Dodge Dakota™: 10mm x 1.50
Dodge Magnum™ -  8mm x 1.25
Dodge™ Truck - 1946 to 1955 - manual: 5/16 - 24
Dodge Cummins™ Truck - 2006 - manual: 10mm x 1.50
Dodge Ram 2500™ Truck - 2006 - manual: 10mm x 1.50
Dodge Viper™ - manual: 1/2 - 20
Ford F150™ - manual: Non-threaded, requires a non-threaded adapter kit, call for options
Ford Fairlane™: 1/2 - 20
Ford Falcon™: 1/2 - 20
Ford Focus™ - manual: 12mm x 1.25 Recessed for Reverse Lockout
Ford Fiesta™ - 2015 manual: 12mm x 1.25 Recessed for Reverse Lockout
Ford GT™ - manual 2005: 12mm x 1.75
Ford Model A™ - 1929 to 1931: 5/16 - 24
Ford Mustang™ - manual 1964 to 1969: 1/2 - 20
Ford Mustang™ - manual 1979 to 2004: 12mm x 1.75
Ford Mustang™ - manual 2005 to 2014: 12mm x 1.25
Ford Mustang™ - manual 2015 and newer: 12mm x 1.25 Recessed for Reverse Lockout
Ford Mustang GT350™ - manual 2015 and newer: 10mm x 1.25 Recessed for Reverse Lockout
Ford Mustang Shelby™ - manual 2007 to 2009 (factory installed): 12mm x 1.25
(Note: For Shelby American shifters see the Performance Aftermarket Shifters section listed above)
Ford Mustang Shelby™ - manual 2010 to 2014 (factory installed): 10mm x 1.25
Ford Mustang Shelby KR™ - manual 2008: 12mm x 1.75
Ford Mustang Shelby Super Snake™ - manual 2007: 12mm x 1.75
Ford Pantera™ - manual: 8mm x 1.25
Ford Ranger™: Non-threaded, requires a non-threaded adapter kit, call for options
Ford Probe™ - manual: 10mm x 1.25
Ford SVT Contour™: 1/2 - 20
Ford Torino™ - manual 1972: 7/16 - 20
GMC Sonoma™ - 1992: 10mm x 1.50
GMC™ Truck - 1936 to 1946: 3/8 - 24
Jeep™ CJ3B Willys 1954: 5/16 - 24
Jeep™ CJ5, CJ6, CJ7, CJ8 early 1960's models: 5/16 - 24
Jeep™ CJ5, CJ6, CJ7, CJ8 later models: 3/8 - 24
Jeep™ CJ5 1977 3 speed: 1/2 - 20
Jeep™ CJ5 1979 3 speed: 5/16-24
Jeep Cherokee™: 10mm x 1.50
Jeep Renegade™: Requires our Jeep Renegade Shift Knob Adapter
Jeep Wrangler™ (YJ) '87-'95: 3/8 - 16
Jeep Wrangler™ (TJ) '97-'06: 10mm x 1.50
Jeep Wrangler™ - Manual 2007 and newer: Non-threaded, requires a non-threaded adapter kit or a non-threaded insert
Jeep Wrangler™ - Automatic 2007 - 2010 and newer: requires our Jeep Automatic Adapter 2007 - 2010
Jeep Wrangler™ - Automatic 2011 and newer: requires our Jeep Automatic Adapter 2011+
Jeep Wrangler™ - Automatic Transfer Case Shifter 2011 and newer: requires our Jeep Transfer Case Adapter 2011+
Mercury Cougar™ through 1967: 1/2 - 20
Plymouth™ through 1965: 3/8 - 24
Plymouth™ 1966 to 1968 Inland Shifter: 9/16-18 Recessed for Reverse Lockout
Plymouth Barracuda™: 9/16 - 18
Plymouth Duster™: 3/8-16
Plymouth PT Cruiser™: 3/8 - 16
Plymouth Valiant™: 3/8 - 24
Pontiac Fiero™ - manual: 16mm x 1.50
Pontiac Firebird™ - manual through 1967 : 5/16 - 18
Pontiac Firebird™ - manual: 16mm x 1.50
Pontiac GTO™ - manual '04-'06: Non-threaded, requires a non-threaded adapter insert w/ set screws
Pontiac Tempest™ 4 speed: 3/8 - 16
Saturn™ - manual: Non-threaded, requires a non-threaded adapter kit, call for options

Import Vehicles
Acura™ - manual: 10mm x 1.50
Alfa Romeo™ - manual: Non-threaded, requires a non-threaded adapter kit, call for options
Audi™: 12mm x 1.50
Austin Healy™ - 6 cylinder: 3/8 - 16
BMW™: Non-threaded, requires a non-threaded adapter kit, call for options
Datsun™ 240Z, 260Z, 280Z - manual: 8mm x 1.25
Datsun™ 300ZX - manual: 10mm x 1.25
Fiat Spider - 2017 manual: 10mm x 1.25
Ferrari™ - manual: 10mm x 1.25
Geo Storm™ - manual: 10mm x 1.25
Geo Tracker­­­­™ - manual: 12mm x 1.25
Honda™ - manual: 10mm x 1.50
Honda Pilot™ - automatic (column): 12mm x 1.25
Hyundai™ - manual to 2013: 10mm x 1.25
Hyundai™ - manual 2014 and newer: Non-Threaded
Isuzu Impulse™ - manual: 10mm x 1.25
Jaguar™ - manual through 1964: 5/16 - 18
Jaguar™ - manual: 8mm x 1.25
Jaguar X-Type - 2002 5 speed manual: 12mm x 1.25
Kia Forte™ - manual: 10mm x 1.25
Kia Soul™ - manual: 10mm x 1.25
Land Rover™ Defender 90 North American Spec. - 1994 to 1997 manual: 13mm x 1.25
Lexus™ - automatic: 8mm x 1.25
Lexus™ - manual: 12mm x 1.25
Lotus Elise™ - 2005 to Jan. 2009: 10mm x 1.50
Lotus Elise™ - after Jan. 2009: 12mm x 1.50
Lotus Exige™ - 2005 to Jan. 2009: 10mm x 1.50
Lotus Exige™ - after Jan. 2009: 12mm x 1.50
Mazda™ - most models - automatic: 8mm x 1.25
Mazda™ - most models - manual: 10mm x 1.25
Mazda Miata™ - manual: 10mm x 1.25
MG Midget™ & 1100 Sedan: 5/16 - 18
MGB™: 3/8 - 16
Mitsubishi™ - manual: 10mm x 1.25
Mini Cooper™ - manual: Non-threaded, requires a non-threaded adapter kit, call for options
Nissan™ - most models - manual: 10mm x 1.25
Subaru™ - automatic: 10mm x 1.25
Subaru™ - manual: 12mm x 1.25
Suzuki Samari™ - manual: 12mm x 1.25
Toyota™ - most models - automatic: 8mm x 1.25
Toyota™ - most models - manual: 12mm x 1.25
Toyota 4 Runner™ - automatic: 8mm x 1.25
Toyota Avalon™ - automatic: 8mm x 1.25
Toyota Camry™ - manual: 12mm x 1.25
Toyota Celica™ - manual: 12mm x 1.25
Toyota Corolla™ - automatic: 8mm x 1.25
Toyota Corolla™ - manual: 12mm x 1.25
Toyota Scion™ - manual: 12mm x 1.25
Toyota Supra™ - manual: 12mm x 1.25
Toyota Tacoma™ - manual: 12mm x 1.25
Toyota Tundra™ - manual: 12mm x 1.25
Toyota Yaris™ - manual: 12mm x 1.25
Truimph Spitfire™ - manual '76: 5/16-18
Truimph TR4™ - manual '64: 7/16-32
Volkswagon Beetle™ '64 to '68: 7mm x 1.00
Volkswagon Beetle™ after '68: 12mm x 1.50
Volkswagon Ghia™ after '68: 12mm x 1.50
Volkswagon Golf™: 12mm x 1.50
Volkswagon Jetta™: 12mm x 1.50
Volkswagon Rabbit™: 12mm x 1.50
Volkswagon Vanagon™ '85 and older: 12mm x 1.50
Volkswagon Vanagon™ '86 to '91: 14mm x 1.50
Volvo™ 140 Series: 3/8 - 16

Shift Knob Adapter Installation Instructions:

WARNING: DO NOT ALLOW SHIFT KNOB TO "BOTTOM OUT" ON SHIFTER SHAFT. THIS COULD CAUSE INTERNAL DAMAGE WHICH COULD CAUSE THE SHIFT KNOB TO RATTLE OR BREAK.
ALWAYS SECURE SHIFT KNOB USING A JAM NUT OR BOOT RETAINER.

Shift Knob Installation Instructions with Brass Adapter and Jam Nut

1. Determine correct Adapter and Jam Nut size.
2. Clean all threads prior to installation
CAUTION - DO NOT PUT ADAPTER DIRECTLY INTO SHIFT KNOB
3. Thread (silver) Jam Nut onto shifter until no more than 3/4" of threads are visible above Jam Nut.
4. Place flat washer on shifter above Jam Nut (for smaller shifter diameters only)
5. Thread (brass) Adapter onto shifter until it touches the Jam Nut (or flat washer)
6. Install Shift Knob onto Adapter until it becomes snug.
CAUTION - DO NOT OVER-TIGHTEN
7. Turn knob counter-clockwise until graphics are in desired position
8. Turn Jam Nut counter-clockwise until it is tight against bottom of Adapter.
WARNING: DO NOT ALLOW SHIFT KNOB TO "BOTTOM OUT" ON SHIFTER SHAFT.
DAMAGE COULD RESULT WHICH IS NOT COVERED BY WARRANTY.
Contact Speed Dawg LLC with any technical questions toll free 1-866-906-7801 or 1-717-741-2665.