Billet Aluminum Grid Heater Delete Spacer for Dodge RAM 5.9L Cummins (1998–2007)

This billet aluminum spacer is designed to replace the factory intake grid heater on 1998–2007 Dodge RAM trucks equipped with the 5.9L Cummins 6BT diesel engine. The spacer eliminates the restrictive grid heater assembly, creating an unobstructed air path between the intake horn and intake manifold. This modification reduces intake restriction, lowers exhaust gas temperatures, and improves airflow to all six cylinders.

The factory grid heater assists cold starting in freezing conditions but creates a physical restriction in the intake path during normal operation. Removing this restriction allows increased air volume to reach the engine, resulting in improved combustion efficiency, reduced black smoke under load, and enhanced throttle response. The spacer is designed as a reversible modification, allowing reinstallation of the factory grid heater if needed for cold weather operation.

Vehicle Fitment

• 1998–2007 Dodge RAM 2500 (5.9L Cummins 6BT Diesel)
• 1998–2007 Dodge RAM 3500 (5.9L Cummins 6BT Diesel)
• Compatible with 2WD and 4WD configurations

Performance & Design

The spacer functions as an elevated plenum that maintains consistent air distribution to all cylinders while eliminating the flow restriction created by the grid heater element. By removing this bottleneck, the modification reduces exhaust gas temperatures during heavy load conditions such as towing or hauling. Lower intake restriction also contributes to improved combustion efficiency, which typically results in reduced visible smoke emissions during acceleration or under load.

The design allows the spacer to be installed between the intake manifold and intake horn using the existing mounting points. This configuration creates a smooth, unobstructed air path without requiring permanent modifications to the engine. The spacer can be removed and the factory grid heater reinstalled if operating conditions require cold-start assistance.

Construction & Materials

The spacer is CNC-machined from 6061-T6 heat-treated billet aluminum. This material provides high strength-to-weight ratio and resistance to the thermal cycling and vibration present in diesel engine applications. The precision CNC machining process ensures consistent dimensions and proper sealing surfaces for leak-free installation. The billet construction provides superior dimensional stability compared to cast alternatives.

The natural aluminum finish resists corrosion in the engine bay environment. All mounting hardware is included and sourced domestically for quality assurance. The machining tolerances ensure proper alignment with factory mounting points and intake components.

Features & Benefits

• CNC-machined from 6061-T6 billet aluminum
• Eliminates factory grid heater restriction
• Reduces exhaust gas temperatures under load
• Improves airflow to all cylinders
• Minimizes black smoke during acceleration and towing
• Enhances throttle response and power delivery
• Reversible installation allows factory grid heater reinstallation
• Precision-machined sealing surfaces
• Corrosion-resistant aluminum construction

What's Included

• CNC-machined 6061-T6 billet aluminum spacer
• Mounting hardware kit
• Installation instructions

Installation

• Direct replacement for factory grid heater assembly
• Installs between intake manifold and intake horn
• Uses existing factory mounting points
• Installation time approximately 20–30 minutes
• Basic hand tools required (socket wrenches, screwdrivers)
• No cutting, welding, or permanent modifications required
• Replacement intake gaskets required (not included)

Installation Note:
New intake gaskets must be used during installation to ensure proper sealing. OEM or high-quality aftermarket gaskets are recommended. Follow proper torque specifications for all mounting hardware. The spacer can be removed and the factory grid heater reinstalled if cold weather operation requires cold-start assistance.

Manufacturing & Availability

Each spacer is CNC-machined to order in the U.S.A. Manufacturing lead time is approximately 7–10 business days before shipment. The made-to-order process ensures each unit meets precise dimensional specifications and quality standards.

Compatibility & Applications

This modification is commonly paired with other performance upgrades including cold air intakes, aftermarket turbochargers, and engine tuning. The improved airflow characteristics complement these modifications by reducing intake restriction at the manifold level. The spacer works with factory engine management systems and does not require tuning to function, though it may be beneficial when combined with other performance modifications.

Legal Notice:
This product is intended for off-road or competition use only. Installation may affect emissions systems and may not be legal for use on public roads in all jurisdictions. Verify local emissions regulations and vehicle modification laws before installation.

This grid heater delete spacer provides reduced intake restriction for the 5.9L Cummins engine while maintaining the option to reinstall factory cold-start components. The precision-machined construction ensures proper fitment and reliable operation in diesel engine applications.

Gaskets Not Included: Replacement intake gaskets are required for installation and sold separately. We recommend using OEM or high-quality aftermarket gaskets for best results. Legal Disclaimer: This product is intended for off-road or racing use only. It may not be legal for use on public roads in all jurisdictions. Please check your local emissions and vehicle modification laws before installation.