Skip to main content
Home / Car Washers / Marshall Guitar Amplifier Effects Pedal Potentiometer Rotary Switch Knob with Splined Shaft Cap

Attributes

Brand -
Category Home Appliances / Car Washers
Origin -
Brand Marshall
Material Durable Plastic with Metal Insert
Shaft Type Splined Shaft (6mm)
Compatibility Guitar Amplifiers and Effects Pedals
Color Classic Black with Gold Logo
Diameter 18mm
Height 12mm
Package Contents 1x Rotary Switch Knob
Mounting Method Push-on Fit with Set Screw
Style Vintage Marshall Iconic Design

6 reviews

A

Anonymous

Mar 24, 2026

Rating: 4/5

Good fit, slightly loose

The knob looks amazing and the branding is crisp. It fits my pedal board potentiometers well, though it was a tiny bit loose until I tightened the set screw.

A

Anonymous

Mar 24, 2026

Rating: 5/5

Authentic Marshall feel

Exactly what I needed to restore the look of my vintage effects unit. The plastic feels sturdy and not cheap like other aftermarket knobs.

A

Anonymous

Mar 20, 2026

Rating: 5/5

Best looking knob available

I bought three of these for my custom pedal build. They elevate the entire aesthetic of the project. Highly recommend for any Marshall enthusiast.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Fast shipping and great product

Arrived quickly and was packaged securely. The knob snaps on easily and the grip is excellent for making precise adjustments during live shows.

A

Anonymous

Mar 08, 2026

Rating: 3/5

Check your shaft size first

The knob itself is beautiful, but make sure you have a splined shaft. I tried to force it onto a smooth shaft initially and realized my mistake. Works great now on the correct pot.

A

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect replacement for my old amp

This knob fits perfectly on my Marshall head. The splined shaft matches exactly, and the gold logo looks authentic. Great quality for the price.

5 FAQ

Q: Is the gold logo printed or molded?

A: The iconic Marshall logo is printed using high-quality durable ink that resists wear from regular use.

Q: Can I use this on a car washer machine?

A: No, this product is specifically designed for musical instrument amplifiers and effects pedals. It is not suitable for car washers or industrial machinery.

Q: Will this fit a standard Bourns potentiometer?

A: Yes, this knob is designed to fit standard 6mm splined shafts commonly found on Bourns and similar quality potentiometers used in guitar gear.

Q: Does this come with a set screw?

A: Yes, the knob includes a small metal set screw on the side to secure it firmly to the shaft and prevent rotation.

Q: What is the return policy if it doesn't fit my pot?

A: We offer a 30-day return policy for unused items in original packaging. Please ensure you verify your shaft type before installation.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Heavy-Duty Lifting Chain with Shackles at Both Ends - Manganese Steel Hoist for Pipes, Rebar, and Stones

Heavy-Duty Lifting Chain with Shackles at Both Ends - Manganese Steel Hoist for Pipes, Rebar, and Stones

$72.00

Industrial Large Roll Oil-Absorbent Paper, Jumbo Lint-Free Wiping Rolls, Cleaning Paper, Wholesale Industrial Jumbo Rolls

Industrial Large Roll Oil-Absorbent Paper, Jumbo Lint-Free Wiping Rolls, Cleaning Paper, Wholesale Industrial Jumbo Rolls

$150.00

5-Inch Flocked Scouring Pad, Stainless Steel Rust Removal and Polishing Disc, Circular Brush Cloth with Backed Flocking for Polishing

5-Inch Flocked Scouring Pad, Stainless Steel Rust Removal and Polishing Disc, Circular Brush Cloth with Backed Flocking for Polishing

$25.00

High-Temperature Fire-Resistant Cotton Incense Burner Mat, Flame-Retardant Pad for Stick Incense Boxes and Aromatherapy Burners, Heat Insulation for Burning Incense

High-Temperature Fire-Resistant Cotton Incense Burner Mat, Flame-Retardant Pad for Stick Incense Boxes and Aromatherapy Burners, Heat Insulation for Burning Incense

$2.98

80 Pairs Zhuji Ankle Socks, Solid Color All-Season Trendy Student Casual Sports Boat Socks, Disposable Short Socks

80 Pairs Zhuji Ankle Socks, Solid Color All-Season Trendy Student Casual Sports Boat Socks, Disposable Short Socks

$9.14

Smart Toilet Storage Rack for Bathroom, Multi-Tier Floor-Standing Organizer with Waterproof Tissue Holder

Smart Toilet Storage Rack for Bathroom, Multi-Tier Floor-Standing Organizer with Waterproof Tissue Holder

$273.00

Yihuashu Calligraphy Felt Mat - Thickened Grid Cloth for Student Practice, Brush Writing Pad

Yihuashu Calligraphy Felt Mat - Thickened Grid Cloth for Student Practice, Brush Writing Pad

$1.98

Xiankan Yunshu [Danran] Ceramic Brush Washer - Hand-Painted Elegant Lily Design under Glaze for Calligraphy Supplies

Xiankan Yunshu [Danran] Ceramic Brush Washer - Hand-Painted Elegant Lily Design under Glaze for Calligraphy Supplies

$32.90

Chunfei Grocery Store Commuter Hard Fork Low-Step Mountain Bike for Road, City, Suburb, School, and Outings

Chunfei Grocery Store Commuter Hard Fork Low-Step Mountain Bike for Road, City, Suburb, School, and Outings

$2,224.64

Zhang Xiaofeng 'Fu Lu' Hotpot Inkstone Set – Covered Ceramic Ink Well for Calligraphy and Chinese Painting

Zhang Xiaofeng 'Fu Lu' Hotpot Inkstone Set – Covered Ceramic Ink Well for Calligraphy and Chinese Painting

$38.00

Invisalign Orthodontic Retainer Case, Portable Storage and Cleaning Box for Aligners and Dentures

Invisalign Orthodontic Retainer Case, Portable Storage and Cleaning Box for Aligners and Dentures

$12.30

Natural 7A Lavender Loose Beads Single Round Bead DIY Amethyst Spacer Beads Jewelry Making Semi-Finished Accessories

Natural 7A Lavender Loose Beads Single Round Bead DIY Amethyst Spacer Beads Jewelry Making Semi-Finished Accessories

$0.88

Paint Brush Cleaner - Mini Toilet Style Rinser for Watercolor and Gouache, Art Supply with Circulating Water System

Paint Brush Cleaner - Mini Toilet Style Rinser for Watercolor and Gouache, Art Supply with Circulating Water System

$16.90

Traditional Wooden Rattle Drum with Sheepskin Head for Early Education, Visual Tracking and Hearing Training for Newborn Boys and Girls

Traditional Wooden Rattle Drum with Sheepskin Head for Early Education, Visual Tracking and Hearing Training for Newborn Boys and Girls

$10.80

Car Tire Stone Removal Hook, Stainless Steel Multi-Function Tool for Cleaning Pebbles from Tires

Car Tire Stone Removal Hook, Stainless Steel Multi-Function Tool for Cleaning Pebbles from Tires

$6.21

Factory Direct Mining Round Link Chains - High Cost-Performance Lifting Chains for Mining Applications

Factory Direct Mining Round Link Chains - High Cost-Performance Lifting Chains for Mining Applications

$153.00

Hangzhou Stomatological Hospital Dental Implant Initial Consultation Package – CT Scan, Missing Tooth Exam, and Custom Implant Plan Design

Hangzhou Stomatological Hospital Dental Implant Initial Consultation Package – CT Scan, Missing Tooth Exam, and Custom Implant Plan Design

$1.00

Rockschool Acoustic Guitar Method Book (Chinese Edition) – Folk & Rock Guitar Grading Curriculum for Schools

Rockschool Acoustic Guitar Method Book (Chinese Edition) – Folk & Rock Guitar Grading Curriculum for Schools

$145.00

Commercial Food Warmer Cabinet, Small Heating Thermostat Display Counter for French Fries, Egg Tarts, Enlarged Chestnuts, and Fried Chicken

Commercial Food Warmer Cabinet, Small Heating Thermostat Display Counter for French Fries, Egg Tarts, Enlarged Chestnuts, and Fried Chicken

$334.00

Natural Green Peridot Crushed Stone, Small Raw Particles for Demagnetizing Energy, Aquarium Landscaping DIY Accessories

Natural Green Peridot Crushed Stone, Small Raw Particles for Demagnetizing Energy, Aquarium Landscaping DIY Accessories

$8.50

3M 5-Inch Flocked Abrasive Disc with Hook-and-Loop Backing – Polishing Pad for Angle Grinders, Rust Removal & Cleaning

3M 5-Inch Flocked Abrasive Disc with Hook-and-Loop Backing – Polishing Pad for Angle Grinders, Rust Removal & Cleaning

$3.20

Children DIY Art Rubbing Stick Round Painting Sponge Brush Graffiti Stamp Tool Kindergarten Rubbing Materials

Children DIY Art Rubbing Stick Round Painting Sponge Brush Graffiti Stamp Tool Kindergarten Rubbing Materials

$2.61

Over-Toilet Storage Rack for Bathroom - Organizer for Tissue, Toiletries, and Body Wash

Over-Toilet Storage Rack for Bathroom - Organizer for Tissue, Toiletries, and Body Wash

$23.46

Magbase Cable Organizer with Dual Strong Magnets for Car, Office, and Home - Holds Power Cables, Ethernet, and Charging Cables

Magbase Cable Organizer with Dual Strong Magnets for Car, Office, and Home - Holds Power Cables, Ethernet, and Charging Cables

$24.90

Multi-Purpose Industrial Wiping Cloth 30*35 - Lint-Free Oil-Absorbent Paper for Aviation, Metro, and Rail Systems

Multi-Purpose Industrial Wiping Cloth 30*35 - Lint-Free Oil-Absorbent Paper for Aviation, Metro, and Rail Systems

$98.00

Commercial Electric Dicing Machine - Multi-Function Slicer for Carrots and Potatoes

Commercial Electric Dicing Machine - Multi-Function Slicer for Carrots and Potatoes

$852.00

[Single Pack] Handwoven Bird Nest Drop Net Cotton Rope Crochet Fruit Mesh Bag Storage Organizer

[Single Pack] Handwoven Bird Nest Drop Net Cotton Rope Crochet Fruit Mesh Bag Storage Organizer

$10.36

Car Tire Lug Nuts - External Hex Cone Seat Wheel Bolts for Custom Rims

Car Tire Lug Nuts - External Hex Cone Seat Wheel Bolts for Custom Rims

$80.00

Infant Sheepskin Rattle Baby Toy for Courage Building, Solid Wood Unpainted Chewable Glue-Free Version for Audio-Visual Grasping Early Education

Infant Sheepskin Rattle Baby Toy for Courage Building, Solid Wood Unpainted Chewable Glue-Free Version for Audio-Visual Grasping Early Education

$18.25

New Transparent Heat-Preserving Display Case for Roast Duck - Commercial Crispy Pork Belly Warmer with Eco-Friendly Design

New Transparent Heat-Preserving Display Case for Roast Duck - Commercial Crispy Pork Belly Warmer with Eco-Friendly Design

$636.00