The right intake air heater relay helps ensure reliable cold starts and steady engine performance in diesel Dodge Ram and Ram-heavy applications. Below are five reliable options drawn from top brands, each designed to match or improve upon OEM specifications. The selections cover common OE numbers and multiple fitments to support a variety of Dodge Ram diesel builds.
Summary of chosen products
| Product | Brand | Key Fitments | Notable Features |
|---|---|---|---|
| Dorman 904-300 Intake Heater Relay | Dorman | Select Dodge / Ram Models | Direct replacement; durable construction |
| uxcell Air Intake Heater Relay No.5187880AC/56029173AB | uxcell | Dodge Ram 2500/3500 2008-2010; 2011-2014 diesel variants | OE numbers; broad fitment in 6.7L/5.9L diesels |
| EATAKWARD 68188401AA Intake Manifold Heater Relay | EATAKWARD | Dodge Ram 2500/3500 1994-2002 5.9L | OE quality components; direct replacement |
| Dorman 904-356 Intake Heater Relay | Dorman | Select Dodge models | Direct replacement; reliable replacement |
| Premium Relay Solenoid AIR Intake Heater Grid (Xspeedonline) | Xspeedonline | 1994-2002 Dodge Ram 2500/3500 with diesel | OEM-standard; 100% tested |
Dorman 904-300 Intake Heater Relay
The Dorman 904-300 is designed as a direct replacement for the intake heater relay on select Dodge and Ram models. It mirrors the form and function of the original relay, ensuring compatibility with the vehicle’s electrical system. Built for durability, the relay is composed of quality components to support reliable operation over time, particularly under cold-start conditions. This part is suitable for replacing a damaged or fatigued relay to restore proper grid heating and reduce cold-start issues. The installation is straightforward for technicians familiar with diesel electrical systems.
uxcell Air Intake Heater Relay No.5187880AC/56029173AB
uxcell offers an intake heater relay compatible with several Dodge Ram diesel configurations, including 5.9L and 6.7L turbo diesels through 2010 and extended to later 2011-2014 variants. The listed OE numbers (5187880AC/56029173AB) indicate alignment with the original standards, and the kit emphasizes reliability in extreme conditions. The product description highlights a direct-fit design that mirrors the original relay’s performance, which helps ensure dependable cold-start behavior and consistent engine operation when the grid heater is active.
EATAKWARD 68188401AA Intake Manifold Heater Relay
EATAKWARD’s intake manifold heater relay is presented as a direct replacement with OE-quality components. The listing highlights compatibility with 68188401AA, 904-308, and 56026842 OE numbers, covering related engine series and ensuring robust performance in demanding operating conditions. Key benefits include accurate fitment and a design intended to simplify bolt-on installation, reducing time and potential errors during replacement. This relay is marketed to help resolve cold-start problems linked to failing grid heating.
Dorman 904-356 Intake Heater Relay
The Dorman 904-356 is another direct replacement option designed to fit select Dodge models. Its emphasis is on mirroring the original relay’s function and ensuring a durable, long-lasting service life. The product targets drivers facing relay fatigue or failure, offering a straightforward path to restoring reliable intake heater performance for smoother starts in cold and challenging conditions.
Premium Relay Solenoid AIR Intake Heater Grid (Xspeedonline)
The Xspeedonline relay is marketed as a top-quality heater relay that meets or exceeds OEM standards. It has undergone 100% testing during manufacturing to ensure reliability and a smooth replacement process. This option lists multiple compatible OE numbers (68188401AA, 904-308, 56026842, 3924594, 3969987) and is aimed at Dodge Ram 2500/3500 diesel configurations from the mid-1990s to early 2000s. The emphasis is on fit, reliability, and performance in extreme conditions.
DVPARTS New Air Intake Heater Relay 904-300 5187880AC
DVPARTS supplies a new air intake heater relay with part numbers 904-300, 5187880AC, and 56029173AB. The listing mentions compatibility with the Dodge Ram 2500 pickup from 2007-2010 and offers a 12-month warranty. This option is positioned as a standard-fit, value-oriented replacement designed to maintain proper grid heating and cold-start performance, with an emphasis on reliability through warranty support.
X AUTOHAUX Intake Manifold Heater Relay
X AUTOHAUX offers an intake manifold heater relay with OE-number references (68188401AA, 904-308, 56026842) and fits for 1994-2002 Dodge Ram 2500/3500 diesel engines. The description highlights durable components designed to withstand extreme conditions and provides a fitment guarantee that mirrors the original relay. The product aims to deliver reliable operation of the grid heater during cold starts and engine warm-up periods.
MOTOALL Relay Solenoid Air Intake Heater Grid
The MOTOALL relay provides a replacement option for Dodge Ram 2500/3500 diesel engines, aligning with Chrysler OE references (68188401AA, 904-308, 56026842) and Cummins part numbers (3924594, 396998). The listing emphasizes compatibility with 1994-2002 diesel engines and positions the relay as a straightforward, reliable component for improving cold-start reliability by properly energizing the grid heater when needed.
Buying Guide: Key Considerations for Intake Heater Relays
- Vehicle compatibility: Verify the relay’s OE numbers and fitment against your specific Dodge Ram model year and engine (5.9L or 6.7L diesel) to ensure proper electrical interfacing.
- OEM-equivalent vs aftermarket: OEM-equivalent relays are designed to match original performance, while aftermarket options may offer cost or availability advantages but vary in consistency.
- Durability and materials: Look for relays built with robust connectors and housing to withstand vibration, temperature swings, and road grime common in diesel applications.
- Ease of installation: Direct-fit relays that bolt into the original location reduce labor time and error. Consider whether wiring harness adapters are needed.
- Warranty and support: A longer warranty or clear return policy can reduce risk when replacing critical engine components.
- Cold-start impact: A reliable relay improves cold-start performance by ensuring the grid heater engages correctly, reducing slow starts and rough idling in cold weather.
- Electrical system context: If the vehicle has a history of electrical issues, it may be prudent to inspect related fuses, wiring, and the heater grid itself to avoid repeated failures.
- Brand reputation and testing: Opt for brands with documented testing and quality control to minimize the chance of premature failure.
- Warranty coverage period: Confirm whether the warranty is limited to manufacturing defects and whether it covers installation labor in addition to the part.
When selecting an intake heater relay, weighing compatibility, build quality, and vendor reliability helps ensure long-term reliability for cold-weather starts and diesel performance. The options above span OEM-like replacements and robust aftermarket choices, offering multiple pathways to restore grid heater function in Dodge Ram diesel engines.