Skip to product information
1 of 1

Genuine Mikuni HSR Short Idle Adjuster Screw – Fits HSR42 / HSR45 / HSR48 Carburetors – Made in Japan

Genuine Mikuni HSR Short Idle Adjuster Screw – Fits HSR42 / HSR45 / HSR48 Carburetors – Made in Japan

Regular price $29.95 USD
Regular price Sale price $29.95 USD
Sale Sold out
Shipping calculated at checkout.

This is a Genuine Mikuni short idle adjuster screw designed specifically for the HSR series performance carburetors, including the HSR42, HSR45, and HSR48. Manufactured in Japan to strict OEM standards, this adjuster provides smooth, accurate idle adjustment and long‑lasting durability.
Unlike cheap offshore reproductions, this authentic Mikuni component ensures proper fit, correct thread pitch, and reliable operation. If your idle screw is worn, stripped, or missing, replacing it with a genuine part restores proper tuning capability and prevents carburetor damage.
Perfect for Harley‑Davidson, custom builds, and any machine running Mikuni HSR carbs.

Fitment
Fits the following Mikuni carburetors:
• HSR42
• HSR45
• HSR48
(Works with all HSR‑series applications.)
⭐ Specifications
• Part Type: Short Idle Adjuster Screw
• Brand: Genuine Mikuni
• Material: OEM‑grade metal construction
• Manufacturing Origin: Made in Japan
• Compatibility: HSR42 / HSR45 / HSR48 carburetors
• Quality: High‑precision OE component (not China‑made)

Key Features
• Genuine Mikuni OEM part
• Smooth, precise idle adjustment
• Correct fit and thread pitch for HSR carbs
• Made in Japan for superior reliability
• Prevents tuning issues caused by worn screws
• Ideal replacement for damaged or missing adjusters
• Works on all HSR42, HSR45, and HSR48 carburetors

Product features

Materials and care

Merchandising tips

Shipping Note: Please ensure your shipping address is complete. Returned packages due to incorrect or incomplete addresses require additional shipping payment.

View full details
Your cart
Product Product subtotal Quantity Price Product subtotal
Motorcycle & ATV Part
Genuine Mikuni HSR Short Idle Adjuster Screw – Fits HSR42 / HSR45 / HSR48 Carburetors – Made in Japan990-605-065
Genuine Mikuni HSR Short Idle Adjuster Screw – Fits HSR42 / HSR45 / HSR48 Carburetors – Made in Japan990-605-065
$29.95/ea
$0.00
$29.95/ea $0.00