EBC OE Style Pilot Jet - #40 Ebc424-2025-2040 — Harley-Davidson (1984-2017)

EBC OE Style Pilot Jet #40 for Harley Keihin BH carburetors, engineered to OEM specifications for precise fuel metering at idle and low-throttle operation. Direct replacement for stock pilot jets on Evolution and Twin Cam engines.

Features

• OE-style design
• #40 orifice size
• Direct replacement for Keihin BH carbs
• Manufactured to OEM specifications

Specifications

• Brand: EBC
• Manufacturer Part #: EBC424-25-40
• UPC: 840655094975
• Jet Size: #40
• Length: 3 in
• Width: 2 in
• Height: 0.5 in
• Weight: 0.0893 lbs
• Country of Origin: United Kingdom

Fitment

Fits Harley-Davidson models equipped with Keihin BH carburetors, including Evolution and Twin Cam engine platforms.

Frequently Asked Questions

Will this fit my Evolution or Twin Cam Harley?

Yes — this #40 pilot jet is designed for Keihin BH carburetors found on Evolution and Twin Cam engines.

What does a pilot jet do?

The pilot jet meters fuel at idle and low-throttle operation, controlling how lean or rich the bike runs when sitting still or creeping in traffic.

Is this an OEM replacement or a performance upgrade?

This is an OE-style direct replacement manufactured to stock specifications. It's not a performance jet — use it to replace a worn or damaged original.

How do I know if I need a new pilot jet?

If your carb is running too rich or too lean at idle, or if the original jet is damaged or clogged, replacement may help. A clogged jet can often be cleaned first.