Best Carburetor Screws

Looking for the best carburetor screws to enhance your engine’s performance? This guide offers a curated list of the top 10 carburetor screws, ensuring a secure fit, leak prevention, and improved efficiency for your vehicle.

Carburetor screws are the unsung heroes of your engine’s performance. Whether you’re rebuilding a bike or tuning a classic car, the right screws make all the difference. This guide highlights the best carburetor screws to keep your ride running smoothly.

Choosing the right screws saves time, money, and frustration. They ensure a secure fit, prevent leaks, and boost efficiency.

From stainless steel to brass, these screws are built to last. Discover the perfect match for your carburetor and ride with confidence.

List of Top 10 Carburetor Screws

Image Title Best For Price
Motorcycle Carburetor Pan Head Screw Set 135 pcs with Washer - Fits Honda Kawasaki Suzuki Yamaha Motorcycle Carburetor Pan Head Screw Set 135 pcs with Washer – Fits Honda Kawasaki Suzuki Yamaha

This Motorcycle Carburetor Pan Head Screw Set is perfect for anyone rebuilding or repairing carburetors on Honda, Kawasaki, Suzuki, or Yamaha motorcycles. It’s a must-have for DIY enthusiasts and mechanics who want to save time and money by having the right screws and washers on hand.

View on Amazon (paid link)
YINETTECH 20Pcs M4x12mm Motorcycle Carburettor Float Bowl Bolt Compatible with Mikuni YINETTECH 20Pcs M4x12mm Motorcycle Carburettor Float Bowl Bolt Compatible with Mikuni

This set is perfect for motorcycle riders, mechanics, and DIY enthusiasts who want strong, rust-free bolts for their Mikuni carburetors. It’s ideal for anyone who values easy installation and a secure fit that lasts.

View on Amazon (paid link)
SeaEagles Fuel Bowl Screws 2 3/4 SeaEagles Fuel Bowl Screws 2 3/4″ Fit for Holley 2300 4160/4150 Carburetor 1/4″ Hex Head with Gasket Compatible with AED 5200 Screws 5-18QFT Set 8Packs

This set is perfect for car enthusiasts and mechanics who want a strong, rust-resistant fit when rebuilding their Holley carburetor. It’s made for anyone who values easy installation and a durable hold.

View on Amazon (paid link)
RTBolts Keihin CV Carb Screws or Bolts • Harley Softails Sportsters Dynas Glides Road Kings RTBolts Keihin CV Carb Screws or Bolts • Harley Softails Sportsters Dynas Glides Road Kings

RTBolts Keihin CV Carb Screws or Bolts are perfect for Harley owners who need a reliable, rust-free solution. If you ride a Sportster, Dyna, Softail, Glide, or Road King from the late 80s to mid-2000s, these stainless steel screws will replace stripped-out originals and last forever.

View on Amazon (paid link)
(8 Pack) Brass Throttle Plate Shaft Screws 8-32 Threads x 5/16 (8 Pack) Brass Throttle Plate Shaft Screws 8-32 Threads x 5/16″ Long Fits: Holley Carburetor 2300, 4150, 4160

These Brass Throttle Plate Shaft Screws fit Holley carburetors 2300, 4150, 4160 and are great for quick repairs.

View on Amazon (paid link)
Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006 Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006

This Alpha Rider Pro Carb Rebuild Kit is perfect for Harley owners who want better performance and easier tuning. It’s great for those with Big Twin, Twin Cam, or Sportster models from 1988 to 2006.

View on Amazon (paid link)
Edelbrock 1496 Carburetor Idle Mixture Screws - Two per Pack Edelbrock 1496 Carburetor Idle Mixture Screws – Two per Pack

This is perfect for car enthusiasts who want easy tuning and a clean finish on their Edelbrock Performer or Thunder Series carburetors. If you need simple installation with durable steel parts, these screws are made for you.

View on Amazon (paid link)
Carburetor Float Bowl Screws M4-0.7X14 Phillips Screw 10/PK Carburetor Float Bowl Screws M4-0.7X14 Phillips Screw 10/PK

These Carburetor Float Bowl Screws are perfect for anyone fixing or restoring small engines. Whether you’re a DIY enthusiast or a professional mechanic, these M4-0.7×14 Phillips Screws will help you get the job done right.

View on Amazon (paid link)
Windance 2pcs Motorcycle Carburetor Air Adjusting Screw Idle Mixture Fuel Ratio Screw for CV40 CVK34 CVK36 CVK40 Windance 2pcs Motorcycle Carburetor Air Adjusting Screw Idle Mixture Fuel Ratio Screw for CV40 CVK34 CVK36 CVK40

This product is perfect for motorcycle owners who want to fine-tune their engine’s performance. It’s ideal for those looking to reduce emissions and improve fuel efficiency with easy, tool-free adjustments.

View on Amazon (paid link)
Amavoler Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Replacement Parts Fit for KEIHIN Carburetor Four-Strokes FCR Carbs Honda KTM Yamaha Suzuki Pit Dirt Bike. (Blue) Amavoler Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Replacement Parts Fit for KEIHIN Carburetor Four-Strokes FCR Carbs Honda KTM Yamaha Suzuki Pit Dirt Bike. (Blue)

This air fuel mixture screw is perfect for dirt bike riders and motorcycle enthusiasts who want quick, precise carb tuning. It’s ideal for anyone who values easy installation, durability, and a perfect fit for their Keihin FCR carburetor.

View on Amazon (paid link)

Detailed Reviews

Discover the Best Carburetor Screws with our expert guide. Each pick is backed by real rider feedback and tested for performance and value. Simple, clear insights make it easy to choose the right screws for your bike.

1. Motorcycle Carburetor Pan Head Screw Set 135 pcs with Washer – Fits Honda Kawasaki Suzuki Yamaha

Motorcycle Carburetor Pan Head Screw Set 135 pcs with Washer - Fits Honda Kawasaki Suzuki Yamaha

Rebuilding your motorcycle’s carburetor? This 135-piece screw set has you covered. It includes zinc-plated pan head screws and captive lock washers, perfect for Honda, Kawasaki, Suzuki, and Yamaha bikes. Say goodbye to stripped screws and hardware store runs!

This kit saves time and money, keeping your workshop stocked with the right parts. It fits a wide range of models, making it a must-have for any motorcycle enthusiast.

Pros Cons
  • 135-piece kit saves time and money on carburetor repairs.
  • Zinc-plated screws resist rust, ensuring long-lasting durability.
  • Fits Honda, Kawasaki, Suzuki, Yamaha, and more models.
  • Captive lock washers included for secure and hassle-free installation.
  • Large kit size may feel overwhelming for beginners
  • Not universal fit — limited to certain models only
  • Zinc plating offers less rust protection than stainless steel

Perfect For:

This Motorcycle Carburetor Pan Head Screw Set is perfect for anyone rebuilding or repairing carburetors on Honda, Kawasaki, Suzuki, or Yamaha motorcycles. It’s a must-have for DIY enthusiasts and mechanics who want to save time and money by having the right screws and washers on hand.

Ready to Purchase?

2. YINETTECH 20Pcs M4x12mm Motorcycle Carburettor Float Bowl Bolt Compatible with Mikuni

YINETTECH 20Pcs M4x12mm Motorcycle Carburettor Float Bowl Bolt Compatible with Mikuni

YINETTECH 20Pcs M4x12mm Motorcycle Carburettor Float Bowl Bolt is perfect for Mikuni carburetors. It works with street bikes, off-road bikes, and scooters. Each set includes 20 screws and 20 washers.

Made from 304 stainless steel, these bolts are rust-free and long-lasting. The M4x12mm fine thread ensures a secure, non-slip fit.

The hexagon socket head allows easy assembly and disassembly. Use a wrench or tool for quick installation. Replace parts with ease using this complete set.

Pros Cons
  • 20-piece set for easy, complete carburetor repairs.
  • Stainless steel ensures long-lasting durability and rust resistance.
  • Fine thread design provides secure, non-slip installation.
  • Hex socket head allows quick assembly with basic tools.
  • Not universal fit — only works with Mikuni carbs
  • Small size — easy to misplace during repairs
  • Basic design — lacks premium finish or style appeal

Perfect For:

This set is perfect for motorcycle riders, mechanics, and DIY enthusiasts who want strong, rust-free bolts for their Mikuni carburetors. It’s ideal for anyone who values easy installation and a secure fit that lasts.

Ready to Purchase?

3. SeaEagles Fuel Bowl Screws 2 3/4″ Fit for Holley 2300 4160/4150 Carburetor 1/4″ Hex Head with Gasket Compatible with AED 5200 Screws 5-18QFT Set 8Packs

SeaEagles Fuel Bowl Screws 2 3/4

SeaEagles Fuel Bowl Screws are a perfect fit for your Holley carburetor rebuild. These 2 3/4-inch screws replace the old ones in Holley 4150, 4160, and M2300 carburetors.

The rust-resistant plated surface keeps them looking new and working well. They are made of high-quality materials for long-lasting use.

Easy to install, durable, and compatible with AED 5200 screws. Comes in a set of 8 packs with gaskets.

Pros Cons
  • Fits perfectly with Holley carburetors for easy installation.
  • Rust-resistant coating ensures long-lasting durability.
  • High-quality materials guarantee reliable performance.
  • Includes gasket for a secure, leak-free seal.
  • No instructions included, might confuse first-time users.
  • Limited compatibility, not universal for all carburetors.
  • Gasket may wear out faster under heavy use.

Perfect For:

This set is perfect for car enthusiasts and mechanics who want a strong, rust-resistant fit when rebuilding their Holley carburetor. It’s made for anyone who values easy installation and a durable hold.

Ready to Purchase?

4. RTBolts Keihin CV Carb Screws or Bolts • Harley Softails Sportsters Dynas Glides Road Kings

RTBolts Keihin CV Carb Screws or Bolts • Harley Softails Sportsters Dynas Glides Road Kings

Strong fitment across Harley models. Built for Sportsters, Dynas, Softails, Glides, Road Kings. Easy install, perfect replacement.

Made from stainless steel. That means no rust ever. Your carb stays secure.

Say goodbye to stripped-out screws. These bolts are the solid upgrade your bike needs. Ride with confidence.

Pros Cons
  • Perfect fit for Sportsters, Dynas, Glides, Road Kings
  • Stainless steel means no rust ever
  • Strong replacement for stripped-out CV screws
  • Easy upgrade with lasting durability
  • Built tough for Harley riders everywhere
  • Cannot use on bikes older than 1988.
  • Requires new tools for install.
  • Higher cost than basic screws.

Perfect For:

RTBolts Keihin CV Carb Screws or Bolts are perfect for Harley owners who need a reliable, rust-free solution. If you ride a Sportster, Dyna, Softail, Glide, or Road King from the late 80s to mid-2000s, these stainless steel screws will replace stripped-out originals and last forever.

Ready to Purchase?

5. (8 Pack) Brass Throttle Plate Shaft Screws 8-32 Threads x 5/16″ Long Fits: Holley Carburetor 2300, 4150, 4160

(8 Pack) Brass Throttle Plate Shaft Screws 8-32 Threads x 5/16

Strong, reliable, and built to last. These brass throttle plate shaft screws are made for precision. Perfect fit every time.

Designed for Holley Carburetors 2300, 4150, and 4160. Each pack includes 8 screws. Easy install, secure hold.

No rust. No slip. No hassle. Just solid performance you can trust.

Pros Cons
  • Strong brass build for lasting use
  • Perfect fit for Holley carburetors
  • Easy install with 8-32 threads
  • Reliable hold for throttle plates
  • Value pack of 8 screws included
  • Limited compatibility with non-Holley carburetors.
  • Brass material may wear faster under high heat.
  • No extra washers or tools included in the pack.

Perfect For:

These Brass Throttle Plate Shaft Screws fit Holley carburetors 2300, 4150, 4160 and are great for quick repairs.

Ready to Purchase?

6. Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006

Alpha Rider Pro Carb Rebuild Kit Mixture Screw For Keihin CV CVK Carbs For Harley Big Twin 1990-1999, Twin Cam 1999-2006 & Sportster XL 883 1200 1988-2006

Get smoother rides with the Alpha Rider Pro Carb Rebuild Kit Mixture Screw. Adjust your idle mix fast. No tools needed.

Enjoy precise tuning that cuts emissions. Reduce off-idle spit with ease.

Easy grip with a knurled edge. Sharp tip for max efficiency. Install after removing the factory plug.

Pros Cons
  • Quick idle mix with no tools needed
  • Precise adjustment cuts emissions and off-idle spit
  • Easy grip thanks to knurled edge design
  • Efficient performance with precision tip shape
  • Complete kit includes screw, spring, O-ring, washer
  • Requires welsh plug removal for installation, adding extra steps.
  • No tools needed, but adjustment might feel tricky for beginners.
  • Limited compatibility with specific Harley models only.

Perfect For:

This Alpha Rider Pro Carb Rebuild Kit is perfect for Harley owners who want better performance and easier tuning. It’s great for those with Big Twin, Twin Cam, or Sportster models from 1988 to 2006.

Ready to Purchase?

7. Edelbrock 1496 Carburetor Idle Mixture Screws – Two per Pack

Edelbrock 1496 Carburetor Idle Mixture Screws - Two per Pack

Get the right tune with the Edelbrock 1496 Carburetor Idle Mixture Screws. Strong steel build and a clean gold iridite finish make them reliable and sharp.

They fit Performer Series and Thunder Series AVS carburetors. Each pack has two screws and springs. Setup is quick and simple.

Perfect for square-bore carburetors. Sold in pairs for easy replacement. Built to last and keep your engine smooth.

Pros Cons
  • Strong steel build for lasting performance
  • Easy install with included springs
  • Fits Performer and Thunder Series carburetors
  • Pair pack for square-bore carburetors
  • Sleek gold iridite finish adds durability
  • Limited to specific carburetor models, not universal.
  • No instructions included, might confuse first-time users.
  • Gold finish may wear off with heavy use.

Perfect For:

This is perfect for car enthusiasts who want easy tuning and a clean finish on their Edelbrock Performer or Thunder Series carburetors. If you need simple installation with durable steel parts, these screws are made for you.

Ready to Purchase?

8. Carburetor Float Bowl Screws M4-0.7X14 Phillips Screw 10/PK

Carburetor Float Bowl Screws M4-0.7X14 Phillips Screw 10/PK

Secure your carburetor with these M4-0.7×14 Phillips screws. Each pack contains 10 screws, ensuring you have enough for the job. They are specifically designed for carburetor float bowls.

These screws are easy to install and provide a reliable hold. The Phillips head allows for quick tightening with a standard screwdriver.

Pros Cons
  • Secure fit for carburetor float bowls with M4-0.7×14 screws.
  • Phillips head design ensures easy installation and removal.
  • Pack of 10 provides convenient spares for future needs.
  • Durable construction for reliable performance in carburetors.
  • Not universal fit for all carburetors
  • Small size makes them easy to misplace
  • Limited pack—only 10 screws included

Perfect For:

These Carburetor Float Bowl Screws are perfect for anyone fixing or restoring small engines. Whether you’re a DIY enthusiast or a professional mechanic, these M4-0.7×14 Phillips Screws will help you get the job done right.

Ready to Purchase?

9. Windance 2pcs Motorcycle Carburetor Air Adjusting Screw Idle Mixture Fuel Ratio Screw for CV40 CVK34 CVK36 CVK40

Windance 2pcs Motorcycle Carburetor Air Adjusting Screw Idle Mixture Fuel Ratio Screw for CV40 CVK34 CVK36 CVK40

The Windance 2pcs Motorcycle Carburetor Air Adjusting Screw is a must-have for bike enthusiasts. It works with CV40, CVK34, CVK36, and CVK40 carburetors.

Quick idle mixture with no tools needed. Knurled edge for easy grip. Precision tip for maximum efficiency.

Reduces emissions and off-idle spit. Brass screw, spring, washer, and gasket included. Fits Keihin carburetors perfectly.

Pros Cons
  • Instant idle mix, no tools.
  • Precision setting cuts emissions.
  • Knurled edge gives firm grip.
  • Sharp tip boosts fuel efficiency.
  • Includes brass screw, spring, washer, gasket.
  • Limited compatibility with non-Keihin carburetors.
  • No instructions included for first-time users.
  • Small parts may easily get lost during installation.

Perfect For:

This product is perfect for motorcycle owners who want to fine-tune their engine’s performance. It’s ideal for those looking to reduce emissions and improve fuel efficiency with easy, tool-free adjustments.

Ready to Purchase?

10. Amavoler Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Replacement Parts Fit for KEIHIN Carburetor Four-Strokes FCR Carbs Honda KTM Yamaha Suzuki Pit Dirt Bike. (Blue)

Amavoler Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Replacement Parts Fit for KEIHIN Carburetor Four-Strokes FCR Carbs Honda KTM Yamaha Suzuki Pit Dirt Bike. (Blue)

Upgrade your carburetor with the Amavoler Air Fuel Mixture Screw. This CNC-machined screw is a perfect fit for Keihin FCR carburetors, ensuring precise adjustments. It’s easy to install and built to last with high-quality aluminum.

The blue anodized finish adds a touch of style, while the O-ring design keeps your settings secure. Each screw is numerically calibrated, making tuning a breeze. Package includes one screw, ready to enhance your bike’s performance.

Pros Cons
  • Fits most Keihin FCR carburetors, easy upgrade.
  • Precision CNC machined for perfect tuning.
  • Durable aluminum, long-lasting performance.
  • Simple install, no hassle, ready to use.
  • Not universal fit — may not suit all carb models
  • Single color option — only available in blue
  • Size sensitive — must confirm exact fit before buying

Perfect For:

This air fuel mixture screw is perfect for dirt bike riders and motorcycle enthusiasts who want quick, precise carb tuning. It’s ideal for anyone who values easy installation, durability, and a perfect fit for their Keihin FCR carburetor.

Ready to Purchase?

Buying Guide

The right carburetor screws make tuning easy. They keep your engine secure. They save you from frustration.

Here’s what to look for when buying:

  • Material: Choose stainless steel or brass. Stainless steel resists rust. Brass gives a precise fit and smooth performance.
  • Fitment: Always check compatibility with your carburetor model. Wrong screws cause leaks. Right screws ensure a tight seal.
  • Thread Size: Match the thread size exactly. A mismatch strips threads. Correct size means a secure hold.
  • Head Type: Pick Phillips, hex, or pan head depending on your tools. Hex heads allow easy tightening. Phillips heads are quick with a screwdriver.
  • Durability: Look for plated or CNC-machined screws. They last longer. They handle repeated tuning without wear.
  • Ease of Use: Screws with knurled edges or socket heads make adjustments simple. No slipping. No wasted time.
  • Complete Sets: Buying a kit saves money. You get washers and multiple sizes. Perfect for rebuilds and workshops.
  • Performance Impact: Good screws prevent air leaks. They keep fuel mix stable. That means smoother rides and better efficiency.

Pick the right screws, and your carburetor stays strong, efficient, and easy to maintain.