243C2-42421 STEVENS LAKE PARTS Glow Plug Timer Relay Tcm

Review STEVENS LAKE PARTS Glow Plug Fits Timer Relay Tcm Replaces

The Stevens 243C2-42421 Glow Plug Timer Relay TCM is an essential component for ensuring a smooth and efficient starting process in diesel engines. This relay is specifically designed to control the glow plug heating element, which preheats the engine cylinders before starting the vehicle in cold weather conditions.

This TCM (Technical Control Module) relay features a robust and compact design, with a size of 72mm x 52mm x 27mm (L x W x H). It is built with high-quality materials, ensuring durability and reliability even in harsh operating conditions. The relay is also designed to be easy to install, with clear and concise labeling on the terminals.

The Stevens 243C2-42421 Glow Plug Timer Relay TCM operates on a 12-volt DC power supply and includes both normally open (NO) and normally closed (NC) contacts. It is designed to switch the glow plugs on for a specific duration, typically between 4 to 10 minutes, depending on the engine temperature and the vehicle manufacturer's recommendations.

This relay is suitable for use in a variety of diesel engines, including those used in heavy-duty trucks, buses, and agricultural equipment. It is also compatible with a wide range of vehicle makes and models, making it a versatile solution for various applications.

The Stevens 243C2-42421 Glow Plug Timer Relay TCM is a crucial component for maintaining the optimal starting performance of diesel engines in cold weather conditions. Its robust design, ease of installation, and compatibility with various vehicle makes and models make it a valuable addition to any workshop or repair facility.

Stevens 243C2-42421 Glow Plug Timer Relay (TCM): A Comprehensive Analysis

The Stevens 243C2-42421 Glow Plug Timer Relay (TCM) is a crucial component for ensuring a smooth cold start in diesel engines. This relay is responsible for controlling the glow plugs, which heat up the engine before starting. In this analysis, we will examine the potential advantages and disadvantages of purchasing this specific model.

1. Durability: The Stevens 243C2-42421 TCM is known for its robust construction, ensuring reliable performance even in harsh conditions.

2. Universal Compatibility: This TCM model is compatible with a wide range of diesel engines, making it a versatile choice for various applications.

3. Easy Installation: The glow plug timer relay comes with a clear wiring diagram, making installation a relatively straightforward process for most users.

4. Improved Engine Performance: By ensuring optimal glow plug operation, this TCM can lead to improved engine performance and reduced start-up time.

5. Cost-Effective: Compared to some other TCM options in the market, the Stevens 243C2-42421 model is considered a cost-effective solution.

1. Potential for Incorrect Wiring: Improper wiring during installation could lead to issues with the TCM, potentially affecting the performance of the glow plugs and the engine as a whole.

2. Limited Temperature Range: The glow plugs may not heat up efficiently in extreme temperatures, which could result in prolonged start-up times or difficulty starting the engine.

3. Dependence on Glow Plugs: While the TCM is essential for controlling the glow plugs, it does not directly address other potential issues with the engine or starting system.

The Stevens 243C2-42421 Glow Plug Timer Relay (TCM) is a reliable and cost-effective solution for ensuring proper glow plug operation in diesel engines. Its durability, universal compatibility, and straightforward installation make it an attractive choice for many users. However, potential challenges such as incorrect wiring and limited temperature range should be considered before purchasing. Ultimately, the decision to buy this TCM model depends on the specific requirements and conditions of your diesel engine application.

If you are in need of a reliable and cost-effective glow plug timer relay for your diesel engine, the Stevens 243C2-42421 model is a strong contender. Ensure that you follow the provided wiring diagram carefully during installation and consider using an insulated heat shield to protect the TCM from extreme temperatures. With proper care and maintenance, this TCM can help improve your engine's performance and make cold starts a thing of the past.

Details:

Fits tcm replaces part number s: 243C2-42421. Please save all original packaging.!, refer to for more details. One new aftermarket glow plug fits timer relay. Tech info: -12v.

Glow plug fits timer relay tcm replaces 243C2-42421. Normally same day if before 1pm est. Many things can play a factor such as location, weather, and the items in order.

specifications genpurrelays:

• brand: Stevens Lake Parts
• mpn: 243c2-42421
• model: 12-volt
• type: Electrical
• compatible equipment make: For Aftermarket
• compatible equipment type: Forklift

seller genpurrelays:

• rating: 99.4%
• city: webberville, mi
• # reviews: 152299

offer genpurrelays:

• availability: in stock
• in stock #: 2
• sold #: 11
• options: ship-to-home
• best offers: true
• prices: $125.00–$164.89
• item condition: New
• started: april 10, 2026

returns genpurrelays:

• policy: returns accepted
• method: money back
• paid by: seller
• time: 30 days

payments genpurrelays:

• other
• credit card: discover
• wallet: apple-pay

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

shipping genpurrelays:

• type: fixed
• service: expedited
• transit: 3-6 days
• class: expedited