GLM 71420 Distributor Cap Review

Let’s Talk About GLM 71420 Distributor Cap

The GLM 71420 Distributor Cap isn’t exactly the kind of gear that gets the adrenaline pumping like a new hunting rifle or a state-of-the-art GPS. However, for anyone who relies on their boat for work or recreation, a reliable distributor cap is absolutely essential. GLM Products aims to provide that reliability with their replacement ignition distributor cap, designed for Mercruiser, OMC, and Volvo Penta engines.

My journey to the GLM 71420 Distributor Cap started with a sputtering engine far from shore. The old cap had cracked, leaving me stranded and facing a hefty towing bill. I needed a replacement that was dependable and wouldn’t let me down again.

Unboxing the GLM 71420 Distributor Cap, my first impression was that it looked…well, like a distributor cap. The design is utilitarian, with no unnecessary frills. The plastic felt sturdy enough, and the metal contacts seemed well-seated.

Compared to some other aftermarket caps I’ve used, the GLM offering seemed to be a slightly better build quality than the absolute cheapest options, but not quite as robust as some of the OEM (Original Equipment Manufacturer) parts. Ultimately, I chose the GLM 71420 Distributor Cap because it struck a balance between affordability and a perceived acceptable level of quality. Initially, I was cautiously optimistic.


Real-World Testing: Putting GLM 71420 Distributor Cap to the Test

First Use Experience

My first test of the GLM 71420 Distributor Cap came on a fishing trip in the Puget Sound. The conditions were typical for the region: damp, salty air and choppy waters. Installation was straightforward, following the manufacturer’s recommendations.

The engine fired up quickly, and initially, it ran smoothly. There were no immediate red flags.

Extended Use & Reliability

After several months of use, the GLM 71420 Distributor Cap has held up reasonably well. There are no visible signs of cracking or degradation, despite constant exposure to the harsh marine environment. Maintenance has been minimal, just a quick wipe-down after each trip to remove any salt buildup.

Compared to the OEM cap it replaced, the GLM cap seems to perform nearly as well, although I do notice a very slight hesitation in the engine during hard acceleration that wasn’t there before. Whether that’s due to the cap or some other factor is hard to definitively say, but it is something I observed. Overall, it hasn’t disappointed, but it also hasn’t blown me away.

Breaking Down the Features of GLM 71420 Distributor Cap

Specifications

The GLM 71420 Distributor Cap is designed as a direct replacement for specific Mercruiser, OMC, and Volvo Penta engines. It’s constructed from molded plastic with metal contacts for spark plug wire connections.

The key specification is compatibility with the specific engine model, ensuring proper fit and spark delivery. Without proper fit, the engine simply won’t run correctly, or at all. The materials are chosen to withstand the demanding marine environment, which is a major factor in distributor cap longevity.

Performance & Functionality

The GLM 71420 Distributor Cap performs its primary job adequately: distributing spark to the correct cylinders in the firing order. The engine runs, the boat moves.

Its strengths lie in its ease of installation and reasonable reliability for the price. The slight hesitation I mentioned earlier is a minor weakness, but not a deal-breaker at this price point. It meets expectations for a budget-friendly replacement part.

Design & Ergonomics

The design of the GLM 71420 Distributor Cap is purely functional. It’s a black plastic cap with terminals. Build quality is acceptable.

There is no real ergonomic aspect to consider here. Installation is straightforward, and no special tools are required beyond what you’d normally use for engine maintenance.

Durability & Maintenance

The GLM 71420 Distributor Cap should last for a reasonable amount of time, assuming normal operating conditions and proper engine maintenance. Regular inspection for cracks or corrosion is recommended.

Maintenance is minimal, just keeping the terminals clean and dry. Replacement is a simple process when needed.

Accessories and Customization Options

There are no accessories or customization options for the GLM 71420 Distributor Cap. It’s a direct replacement part. It is designed to work with the existing spark plug wires and other ignition system components.

Pros and Cons of GLM 71420 Distributor Cap

Pros

  • Affordable price point.
  • Direct replacement fit for specified engines.
  • Reasonable reliability for the cost.
  • Easy to install.
  • Withstands typical marine environment exposure.

Cons

  • Slight hesitation in engine performance noted during hard acceleration.
  • Build quality is not quite as robust as OEM parts.


Who Should Buy GLM 71420 Distributor Cap?

The GLM 71420 Distributor Cap is perfect for boat owners looking for a budget-friendly replacement part to get their engine running again. It’s a good choice for those who maintain their own boats and are comfortable with basic engine repairs.

This product should be skipped by those seeking the absolute best performance and longevity, or those who demand OEM-level quality. For these individuals, investing in a higher-priced, original equipment distributor cap is probably the better decision.

A must-have with this product is a tube of dielectric grease for protecting the terminals from corrosion.

Conclusion on GLM 71420 Distributor Cap

The GLM 71420 Distributor Cap is a solid, budget-friendly option for boat owners needing a replacement ignition distributor cap. It may not be the highest-performing or most durable option on the market, but it gets the job done for a reasonable price.

The price is justified, given the cost of comparable parts and the potential cost of being stranded on the water. I would personally recommend it to boaters who need a functional replacement without breaking the bank. Overall, the GLM 71420 Distributor Cap represents a good value for money. So, if you need a replacement and are on a budget, give it a try!

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