RJ19LM Spark Plug Cross Reference Chart: Find the Right Fit Today

RJ19LM is a small‑engine spark plug that can be safely replaced by plug codes such as NGK BR2LM (and equivalent codes like B2LM/BR2‑LM) — making BR2LM a common cross‑reference for RJ19LM.

To keep your engine running smoothly, it is important to choose the right spark plug to keep the engine reliable and running for a long time. Many people choose the RJ19LM spark plug for their small engine lawnmowers, generators, and outdoor equipment. But what if you need to replace the spark plug, and it isn’t in stock, or you just want to explore other options?

This guide will detail the RJ19LM spark plug cross reference and its value, other options, and how to choose the best substitute.

What Is RJ19LM Spark Plug?

The RJ19LM spark plug is one of the most common spark plugs in use today, made by NGK. RJ19LM is used in many small engine applications and is the standard spark plug in lawnmowers, generators, and pressure washers among other pieces of outdoor power equipment. Spark plugs are vital components of equipment as they ignite the air-fuel charge within the engine to keep it running.

This example is one of the most popular in the industry for its astounding durability and combustion efficiency and performance consistency as well. Sadly, however, all components must come to an end, and the same can be said for spark plugs as well. For the trouble-free functioning of your engine, be sure to change it often to avoid problems such as rough engine idling, loss of fuel efficiency, and misfires.

If spark plugs need to be replaced, then what have you to do if you can’t find an RJ19LM spark plug? This is also where interchangeable the spark plugs come into play.

Why is the RJ19LM Spark Plug Cross Reference Important?

When looking for spark plug replacements, it’s important to understand that the RJ19LM may not be available. Knowing the correct RJ19LM cross-reference plugs can save you time. Cross referencing is simply a process of finding cross-compatible spark plugs from different manufacturers that work in place of stubborn office tools.

These are the main advantages of cross-referencing spark plugs:

Availability: In case one brand spark plug is out of stock, cross reference charts tell you what their compatible spark plug spark is sold under other brands.

Cost Efficiency: Some cross reference spark plugs are cheaper while still performing the same, if not better, quality of work.

Convenience: You will not have to look up RJ19LM’s exact model number if you quickly want to find other spark plugs that will work just as well.

You will be able to keep using your tools without having to stop for long periods of time. You will be able to keep getting the work done without any compromise in quality.

Common Cross-Reference Spark Plugs for RJ19LM

Some brands have models that can work as a good substitute when you need to find a replacement for the spark plug RJ19LM. A few of the more widely used cross-reference spark plugs RJ19LM include:

1. NGK BPR5ES

The NGK BPR5ES spark plug is probably the best substitute for the RJ19LM. This spark plug is really durable and efficient when it comes to being used in small engine applications. It has a 14mm thread size, so it will work well in lots of different engines. It is a good option for people looking for something to replace RJ19LM because it is in a lot of different pieces of outdoor power equipment like lawnmowers and lawn trimmers.

2. Champion RC12YC

The Champion RC12YC spark plug is also popular among consumers. Champion is a well-established company in the spark plug industry for creating quality RC12YC spark plugs for small engine applications, and provides great ignition performance. Due to the RC12YC’s heat range and electrode configuration, we are confident making this a cross reference for the RJ19LM.

3. Autolite 4163

Those who are having trouble, especially in terms of cost, can use the Autolite 4163 spark plug. It is quite cheap and certainly is a great product for usage, especially with small engines, and provides good ignition to maintain engine performance.

4. Briggs & Stratton 5065

If you are having engines from Briggs & Stratton, 5065 is a good substitute for RJ19LM. It is well known for its exceptional durability and reliability, specifically designed to endure the harsh environments of outdoor power equipment, like lawnmowers, pressure washers, and generators. Also, it is built for engines that need a spark plug to maintain certain temperatures and is highly utilized among outdoor equipment like pressure washers and generators.

5. AC Delco R45TS

If you have an engine that uses an AC Delco spark plug, you will most likely need the R45TS model that replaces the RJ19LM. This spark plug is designed to achieve the best engine performance and engine fuel consumption. Because of its specs, this spark plug is used in many vehicles and in small engine applications, showing that it is highly versatile.

Key Features of Spark Plug Cross Reference RJ19LM

Before you choose a cross reference spark plug, you need to know what to look for in the RJ19LM spark plug. Knowing the specifications of this spark plug will guarantee that you choose a replacement spark plug that meets the same standards as this one in both performance and durability.

The specifications of the RJ19LM spark plug are as follows:

Thread Size: The RJ19LM spark plug has a thread size of 14mm, as is the commonly used thread size in many small engine applications.

Heat Range: The RJ19LM spark plug has a heat range of 19, which means that this plug is designed to operate at moderate to high levels of engine temperature. This ensures that the plug will perform at its best in a variety of engine conditions.

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Electrode Material: The spark plug is made of an alloy of nickel and chromium. The spark plug is durable and as such will not corrode or wear down under pressure, meaning that the spark plug will be able to perform its functions for a long time.

Performance: The RJ19LM is intended to improve the combustion process in the engine, thereby making the engine more powerful and more fuel efficient. The spark plug is made to be precise in its construction to deliver a consistent performance and to not misfire or create an erratic engine.

Durability: The RJ19LM spark plug is made to have a long service life to take to the harsh and rugged working conditions offered by outdoor engine equipment.

Once you understand these characteristics, you can properly cross-reference with other spark plugs.

How to Pick Cross Reference Spark Plugs

When finding a cross, reference spark plug for the RJ19LM, there are a few things to keep an eye out for to ensure that the replacement will work fine with your engine. Below are the most important things to keep note of.

1. Thread Size

Be sure that the spark plug you select has the same thread size as the RJ19LM. The RJ19LM has a 14mm thread size, so any cross reference spark plug would also need to have that same size in order to fit into the engine properly.

2. Heat Range

The heat range of the spark plug is vital for the preservation of the engine. For the RJ19LM, it has a heat range of 19 so the replacement fitting spark plug should have a heat range of 19. Picking a spark plug with another heat range would could run the engine ineffectively and could ruin other components in the engine.

3. Electrode Design

Electrode design has a big impact on the spark plug and how long it will last. Cross reference spark plugs that have the same electrode materials such as nickel chromium are preferred. The correct materials will ensure that the spark plug is intact, especially when the engine is running really hot.

4. Brand Preference

Scan for your favorite name brand spark plugs to see your alternatives. Most notable and trustworthy brand names like Champion, NGK, and Briggs & Stratton all have spark plugs able to cross reference with RJ19LM.

5. Engine Specifications

Your engine’s user manual should always have the best spark plug specs listed. Most manufacturers make special recommendations for spark plugs that will work and are best compatible in order to make your life easier.

How to Replace the RJ19LM Spark Plug

It should be pretty easy to replace the RJ19LM spark plugs with the right tools. It should not be a very difficult task. Easy spark plug replacement starts with the following:

1. Turn Off the Engine: It is going to be a big injury if the engine is not turned completely off and is not fully cooled down as you will have to wait right after so make sure to do this step before anything.

2. Locate the Spark Plug: Most times the spark plug will be resting right on top of the engine’s cylinder head. If there are any covers or components blocking the spark plugs you will need to remove them.

3. Remove the Old Spark Plug: If you are on the removing stage you should have a spark plug socket wrench as you will have to turn the spark plugs counterclockwise to unlock it. Be careful of the other items around the spark plug so that you do not hurt anything.

4. Installing the New Spark Plug: Grab the new cross-reference spark plug, insert it into the socket, and hand-tighten it. Then, use the socket wrench until is tight. Don’t tighten the plug too much, or you might break the threads.

5. Reassemble the Engine: After putting the new spark plug in, put back any parts or covers you took apart. Make sure everything is working as it should by starting the engine.

Benefits of Spark Plug Cross-Referencing

Cross-reference spark plugs have many benefits, including:

• Cost-Effectiveness: Cross-reference spark plugs are typically cheaper than the original.
• Availability: If you’re having trouble locating the RJ19LM, cross-referencing will allow you to find a replacement much easier.
• Flexibility: With many cross-reference options, you have increased variety in choosing the best spark plug for your engine.

Frequently Asked Questions

Here are some FAQs about rj19lm spark plug cross reference –

1. What is a cross-referenced spark plug?

A cross-referenced spark plug is a spark plug with similar engine requirements, and is thus is a plausible replacement, but comes from a different brand.

2. Can I use a different spark plug brand instead of the RJ19LM?

Yes, as long as the specifications are the same. (Thread size, heat range and electrode material). Feel free to use a cross-referenced spark plug.

3. What do I do if I want to replace a spark plug with an RJ19LM?

You can check cross-reference charts or your engine’s manual to obtain spark plugs with the same specifications.

4. Is it a must to replace it with an exact model?

Not really. As long as the cross-reference spark plug has the desired specifications, it can replace it.

5. How frequent do I need to replace the RJ19LM spark plug?

Generally, spark plugs should be replaced after 100 hours or engine use, or as recommended by the manufacturer of the engine.

Conclusion

The RJ19LM spark plug is a good spark plug for small engine applications. However, when replacing it, knowing cross-reference spark plugs that are good replacements is helpful. Cross-referencing helps to find alternative reputable brands such as NGK, Champion, Autolite, Briggs & Stratton, and AC Delco to help you fit your engine.

Giving thought to the thread size, heat range, electrode material, and brand, you are able to select with confidence a spark plug that your engine demands. Getting the right spark plug, and replacing them regularly, will help your engine run smooth and at full efficiency for years.