
8951K1851 Comparison
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![]() | $29.95 | Condition is New, 1pc Eaton 8951K1851 Electrical Engine Start Switch MCI/ASM, FREE SHIPPING | ![]() |

The Eaton 8951K1851 is a high-performance engine start switch designed for heavy-duty applications. This switch is suitable for use in Medium Duty Commercial Vehicles (MCI) and Agricultural machinery (ASM). It is a crucial component in the starting system, allowing the driver to start the engine by activating the switch.
This 1-piece engine start switch features a robust and durable design, with a die-cast aluminum housing that provides excellent protection against environmental elements. It also includes a high-quality, heavy-duty contacts system that ensures reliable operation, even in the most demanding conditions. The switch is designed to handle high currents and can support engine cranking amps up to 2000 amps.
The Eaton 8951K1851 is designed to meet or exceed OEM specifications, ensuring a perfect fit and reliable performance. It is easy to install, with clear and concise wiring instructions included in the package. The switch also includes a mounting bracket for easy installation in various applications.
The switch has a compact and ergonomic design, with a large, easy-to-grip actuator that provides a positive feel when activated. The switch is also designed to be resistant to vibration, ensuring that it remains functional even in the roughest operating conditions.
In summary, the Eaton 8951K1851 engine start switch is a high-performance, durable, and reliable component designed for heavy-duty applications in Medium Duty Commercial Vehicles and Agricultural machinery. Its robust design, high-quality contacts system, and easy-to-install design make it an essential addition to any starting system.
Pros and Cons of Buying Eaton 8951K1851 Engine Start Switch
The Eaton 8951K1851 engine start switch is a crucial component in various heavy-duty vehicle applications. Here's a balanced analysis of the potential advantages and disadvantages of purchasing this part:
Pros:1. Durability: Eaton is a reputable brand known for producing high-quality automotive components. This engine start switch is designed to withstand the rigors of heavy-duty vehicle use, providing long-lasting performance.
2. Versatility: The Eaton 8951K1851 engine start switch is suitable for various applications, including medium and heavy-duty trucks, buses, and industrial equipment. This versatility makes it a popular choice among fleet managers, repair shops, and individual vehicle owners.
3. Reliability: The start switch's reliable operation is essential for ensuring a smooth starting process, especially in cold weather conditions or when dealing with complex vehicle systems.
4. OEM Compatibility: This part is an original equipment manufacturer (OEM) replacement, ensuring a perfect fit and function for specific vehicle applications.
Cons:1. Cost: Compared to some aftermarket alternatives, the Eaton 8951K1851 engine start switch can be more expensive. However, the higher cost may be justified by the part's superior quality and reliability.
2. Availability: In some cases, it might be challenging to find this specific part in local auto parts stores or through some online retailers. However, it is widely available from reputable automotive distributors and Eaton's authorized dealers.
3. Complex Installation: The installation process for an engine start switch can be complex, especially for those with little automotive experience. It might be necessary to consult the vehicle's service manual or seek professional assistance for a successful installation.
Conclusion:The Eaton 8951K1851 engine start switch offers several advantages, including durability, versatility, reliability, and OEM compatibility. However, its higher cost and potential complexity in installation might be considered disadvantages. Ultimately, the decision to purchase this engine start switch depends on the specific requirements of your application, your budget, and your installation capabilities.
Recommendation:If you are in need of a high-quality, reliable engine start switch for heavy-duty applications, the Eaton 8951K1851 is an excellent choice. Its durability, versatility, and OEM compatibility make it a wise investment for fleet managers, repair shops, and individual vehicle owners who demand superior performance and prolonged service life. However, if cost is a major concern, you may want to explore aftermarket alternatives while still ensuring the part's compatibility and reliability.
Details:
1pc Eaton 8951K1851 Electrical engine start switch mci/asm, this listing is for only 1 pc start switch.
specifications indusswitch:
- brand: Eaton Electrical
- mpn: 8951k1851
- operation method: On/off
- type: Power Toggle Switch
- termination type: Connector
- fuse type: Switch
- features: Engine Start
- switch style: Push
- application: Electrical Wiring, Automotive, Commercial, Control Equipment Panels, Electronics, Home/garden, Industrial, Instruments
- country of origin: Mexico
- suitable for: Interior
seller indusswitch:
- # reviews: 311
- city: penn valley, california
- rating: 100.0%
returns indusswitch:
- time: 30 days
- policy: returns accepted
- method: money back
- paid by: seller
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Toggle Switches
shipping indusswitch:
- service: ups ground
- type: fixed
- transit: 4-9 days
- carrier: ups
- class: standard
offer indusswitch:
- in stock #: 1
- started: november 24, 2025
- price: $29.95
- item condition: New
- sold #: 14
- availability: in stock
- options: ship-to-home
- best offers: true
payments indusswitch:
- credit card: visa
- wallet: google-pay
- other
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