CNRAQR LS Gen 3 Knock Sensor Relocation Kit — 36" Extension Harness & Machined Aluminium Brackets for LS1/LS6/LQ9

The CNRAQR LS Gen 3 Knock Sensor Relocation Kit lets you move Gen 3 knock sensors from the valley pan to the block edge, keeping OEM sensors functional while giving easier access for maintenance.

When working on GM LS Gen 3 engines (LS1, LS6, LQ9, LM7 and similar RPOs), the factory valley location can be difficult to reach without removing the intake. This kit provides two machined aluminum brackets and a 36" extension harness that retain the factory M10 knock sensors but relocate them to a much more serviceable position on the lower block edge. It’s a practical upgrade for engine builders, tuners, and anyone who wants to simplify future sensor replacement or diagnostics.

How does this kit simplify knock sensor access?

By moving the sensors from the valley pan area to the outside edge of the block, the CNRAQR brackets eliminate the need to remove the intake for routine sensor service. The relocation harness extends the factory sensor lead by 36 inches so the OEM connectors reach comfortably at the new mounting points.

• Uses original M10-thread Gen 3 knock sensors—no new sensors required.
• 36" harness provides ample length for routing and connector reach.
• Aluminum brackets mount to the block edge for improved access.
• Reduces labor time when replacing or diagnosing knock sensors.

Will this fit my GM LS engine model?

The kit is made specifically for Gen 3 knock sensors and fits a range of LS Gen 3 RPO engines, including LS1, LS6, LQ9, LM7, L59, LR4 and L33. It is not compatible with Gen 2 or Gen 4 knock sensors and is not applicable to LQ4 6.0 engines.

• Compatible RPOs: LS1, LS6, LQ4, LQ9, LM7, L59, LR4, L33.
• Only for Gen 3 knock sensors—check sensor thread size M10 before purchase.
• Not for Gen 2/Gen 4 sensors or LQ4 6.0 application.

What does installation involve and who should do it?

Installation requires clearing tight spaces around the valley and block edge; because of confined access, removal of surrounding components may be necessary. No printed installation guide is included, so the job is best handled by experienced technicians or owners with a well-equipped workshop.

• Professional installation recommended for vehicles with limited access (4x4s especially).
• Expect to remove intake or obstructing parts in some setups to gain clearance.
• Hardware includes 2 aluminum brackets and one 36" extension harness; sensors remain OEM.

What are the kit components and their function?

The package contains two lightweight, corrosion-resistant aluminum brackets engineered to accept the stock M10 Gen 3 knock sensors and a 36" extension harness that preserves OEM connectors and signal integrity. Together they relocate the sensors while maintaining factory electrical connections.

• 2× machined aluminum knock sensor brackets for block-edge mounting.
• 1× 36" knock sensor extension relocation harness with OEM-style connectors.
• Designed to retain original sensors—no splicing or adapter conversion needed.

Who is this for: The CNRAQR LS Gen 3 Knock Sensor Relocation Kit is aimed at LS engine enthusiasts, performance shops, and professional mechanics who want easier access to knock sensors without altering factory electronics. If you own a Gen 3-equipped GM vehicle and prefer to avoid repeated intake removal for sensor service, this kit streamlines maintenance and keeps factory wiring intact. Note: because of tight installation locations and the lack of a printed guide, plan for professional fitting or ensure you have the tools and workspace to manage the job safely.