HKS Iridium Spark Plug 50003-M45XL UTV Heat 9

Description

Product Overview

The HKS 50003-M45XL is a premium iridium spark plug designed specifically for utility terrain vehicles (UTVs). Constructed with a 0.6 mm iridium alloy center electrode and a platinum‑chip outer electrode, it offers exceptional durability and a stable heat range 9 for optimal combustion. The machined metal exterior provides precise thread engagement (14 mm x 19 mm) and a lightweight profile at just 0.353 oz, ensuring reliable performance in harsh off‑road environments.

Usage

This spark plug excels in demanding UTV applications, from trail riding to worksite utility tasks. Its high‑temperature tolerance and quick‑fire ignition make it ideal for engines that operate under heavy loads, frequent start‑stops, and variable altitudes. Riders and mechanics seeking consistent spark energy will benefit from the plug’s resistance to fouling and its ability to maintain peak performance in dusty, wet, or high‑heat conditions.

Why Choose Us

HKS is renowned for precision engineering and rigorous quality control. Each 50003-M45XL undergoes strict testing to meet OEM specifications, guaranteeing a perfect fit and reliable operation. The combination of iridium and platinum materials provides a longer service life compared to standard copper plugs, reducing maintenance intervals and enhancing overall engine efficiency. Our commitment to performance and durability makes this plug a trusted choice for serious UTV enthusiasts.

Key Features

• Heat range 9 for optimal combustion in high‑load UTV engines
• 0.6 mm iridium alloy center electrode for superior spark intensity
• Platinum‑chip outer electrode enhances durability and reduces wear
• Machined metal construction ensures precise thread fit and heat dissipation
• Lightweight design (0.353 oz) minimizes engine load while delivering reliable performance

FAQ

Is this spark plug compatible with all UTV models?

The 50003-M45XL is engineered for specific UTV engines that require a 14 mm x 19 mm thread size. Always verify your vehicle’s service manual or consult a professional to confirm compatibility.

How often should the plug be replaced?

Due to the durability of iridium and platinum, the plug typically lasts 30,000–40,000 miles under normal UTV use, but replacement intervals may vary based on operating conditions.

Can I install the plug myself?

Yes, the plug features a standard thread and can be installed with a spark plug socket. Ensure the engine is cool, use proper torque specifications, and avoid over‑tightening.

What benefits does the platinum outer electrode provide?

The platinum chip reduces electrode erosion, maintaining a consistent spark gap longer than standard plugs, which improves fuel efficiency and engine response.

Does the heat range 9 affect engine tuning?

Heat range 9 is suited for high‑performance UTV engines, offering a balance between preventing pre‑ignition and ensuring quick heat dissipation. Adjustments to ignition timing may be needed for optimal tuning.