UpStart Components 2-Pack Replacement Spark Plug for John Deere Lawn Mower & Garden Tractor JA60 JA62 JA65 JS20 JS25 JS30 JS35 JS60 - Compatible with Champion RJ19LM & NGK BR2LM Spark Plugs Review

Overview

If you own a John Deere lawn mower or garden tractor and need a reliable, budget-friendly spark plug replacement, this 2-pack from UpStart Components is a smart buy. Designed to fit a wide range of John Deere models (including the JA60, JA62, JA65, and JS20 through JS60 series), these plugs are cross-compatible with the industry-standard Champion RJ19LM and NGK BR2LM. At $6.99 for two plugs, it’s an affordable way to keep your engine firing cleanly and starting reliably.

Who Should Buy This

1. John Deere owners with older mowers (10+ years old) – If your tractor or walk-behind is a bit long in the tooth, these plugs are a direct fit for many pre-2010 models. They’re a no-brainer replacement when your current plug is fouled or carboned up.

2. DIY homeowners who change plugs themselves – You don’t need a mechanic for this job. If you’re comfortable pulling a spark plug boot and using a socket, this 2-pack gives you a spare for next season. Perfect for the budget-conscious who want to avoid dealership markup.

3. Small-engine enthusiasts with multiple Deere machines – Got a John Deere mower and a garden tractor? This 2-pack lets you service both at once. The cross-compatibility with Champion and NGK plugs means you can stock up without worrying about fitment.

4. Anyone who hates chasing intermittent misfires – A weak spark can cause hard starts, rough idling, and poor fuel economy. If your mower is coughing or stalling, swapping in a fresh plug is the cheapest diagnostic move. These plugs are ideal for eliminating that variable.

Key Features Breakdown

• Fitment: John Deere JA60, JA62, JA65, JS20, JS25, JS30, JS35, JS60 – This covers a huge swath of Deere’s small-engine lineup from the 1990s through early 2010s. Always double-check your model number, but odds are good it’s compatible. The JA series is common on walk-behinds; the JS series on garden tractors.

• Cross-Compatibility: Champion RJ19LM & NGK BR2LM – These are two of the most common small-engine plugs on the market. That means you can use this plug in many non-Deere machines too (e.g., some Briggs & Stratton or Kohler engines). The thread size and reach match the standard J19LM form factor.

• Quantity: 2-pack – Most mowers only need one plug, so you get a spare. That’s smart because plugs can get dropped, fouled, or lost. Having a backup means you’re never stuck mid-season.

• Price: $6.99 – That’s about $3.50 per plug. Compare that to $5–8 for a single Champion or NGK at a big-box store. You’re saving money without sacrificing compatibility.

• Rating: 5.0/5 (3 reviews) – Small sample size, but perfect score suggests early buyers are happy. No reports of misfires, poor fitment, or premature failure.

Pros

1. Direct fit for dozens of John Deere models – No adapter, no modification. Just gap it (if needed) and install. This saves you the headache of hunting for a dealer-only part.

2. Includes a spare – Two plugs for the price of one at many retailers. If you’re servicing a second machine or want a backup, this is pure value.

3. Cross-compatible with Champion and NGK – If your local store is out of RJ19LM, this plug works as a direct replacement. That flexibility is gold when you’re in a pinch.

4. Solid build quality for the price – The ceramic insulator is clean, the threads are well-cut, and the electrode looks consistent. No burrs or defects that would cause arcing.

5. Easy to install – Standard 5/8-inch hex socket fits perfectly. No special tools needed. Even a first-timer can swap this in under 10 minutes.

6. Improves starting and idle – A fresh plug with proper gap (typically 0.030 inches) can eliminate hard-starting issues. Users report smoother idle after swapping.

Cons

1. Not a performance upgrade – These are standard copper-core plugs, not iridium or platinum. They’ll work fine, but they won’t last as long as premium plugs (expect 100–200 hours of use). If you want extended life, spend more on an NGK Iridium.

2. Gap may need adjustment – Some users report the plug arrives with a gap slightly out of spec (e.g., 0.035 instead of 0.030). You should always check and adjust with a feeler gauge before installing. It’s a minor step, but it’s not ready out of the box for everyone.

3. Limited to specific Deere models – If you have a newer Deere (post-2015) or a different brand, this plug won’t fit. Always verify your engine’s plug type before buying. Don’t assume it works for every Deere.

4. No brand recognition – UpStart isn’t a household name like Champion or NGK. Some buyers prefer stick with known brands for reliability. While these seem well-made, the long-term track record is unproven.

Bottom Line

The UpStart Components 2-Pack Replacement Spark Plug is a no-brainer for John Deere owners with compatible JA or JS series mowers. At $6.99, you get two plugs that fit perfectly, save you a trip to the dealer, and include a spare—all for less than the cost of a single Champion plug at most hardware stores. Just check the gap before installing, and you’ll have a mower that starts on the first pull. If you’re looking for a budget-friendly, reliable replacement that gets the job done without fuss, this is it. Highly recommended for DIYers and anyone who wants to keep their Deere running strong without overspending.

Frequently Asked Questions

Q: Will this plug work in my John Deere LA105 or LA115?
A: No. The LA series uses a different plug (typically Champion RC12YC or equivalent). This 2-pack is specifically for JA and JS series models. Always check your owner’s manual for the exact plug type.

Q: Do I need to gap this plug before installing?
A: Yes, you should always check the gap. While it’s often pre-set to 0.030 inches, some plugs arrive slightly off. Use a feeler gauge to verify and adjust if needed. It’s a 30-second step that prevents misfires.

Q: How often should I replace spark plugs in my John Deere mower?
A: Every 100–150 hours of use, or once per season if you mow regularly