2 Pack Replacement BPR4ES Spark Plug for NGK Lawn Mower Models Review

Name: 2 Pack Replacement BPR4ES Spark Plug for NGK Lawn Mower Models
Brand: Pack
Price: 9.99 USD
Availability: InStock

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★★½ 4.6/5 (79 reviews)

$9.99

Brand: Pack

2 Pack Replacement BPR4ES Spark Plug for NGK Lawn Mower Models

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Overview

Don’t let the name fool you—this isn’t a lawn mower itself, but a 2-pack of replacement BPR4ES spark plugs designed for NGK-compatible lawn mower engines. If you own a push mower, riding mower, or small engine equipment that uses a standard BPR4ES spark plug (common in Briggs & Stratton, Honda, and Kohler engines), this pack is a budget-friendly way to keep your gear running smoothly. At $9.99 for two plugs with a strong 4.6-star rating, it’s aimed at DIY homeowners who want reliable ignition without overpaying for single plugs at big-box stores.

Who Should Buy This

Homeowners with 2–3 small engines (push mower, trimmer, or tiller) who want a spare on hand for quick swaps during mowing season.
Budget-conscious DIYers who prefer a 2-pack over buying single plugs at $6–8 each—especially if you’ve got multiple NGK-compatible machines.
Anyone with a Honda GCV160/190 or Briggs & Stratton 450/500 series engine that calls for a BPR4ES plug—these are a direct drop-in replacement.
Fleet or rental property owners who maintain several mowers and need cost-effective, consistent replacements without chasing specialty brands.

Key Features Breakdown

BPR4ES Specification: This heat range and thread size (14mm, 3/4" reach) are standard for many walk-behind mowers, snow blowers, and generators. It’s a “hot” plug (4 heat rating) that resists fouling in engines that run at lower RPMs for long periods—perfect for mowing thick grass or frequent stop-start use.
2-Pack Value: You get two plugs for roughly the price of one at a hardware store. That means you can replace the plug in your main mower and keep the second as a backup for a trimmer or pressure washer.
NGK Compatibility: NGK is the gold standard for small engine plugs. These match OEM specs, so you won’t need to re-gap or modify anything—just pull the old plug, install the new one, and torque to 18-20 ft-lbs.
Pre-Gapped: The plug comes pre-gapped at 0.030" (0.76mm), which is correct for most applications. Always double-check with a feeler gauge, but 9 out of 10 times it’s ready to go.
Copper Core: Copper center electrode provides good conductivity and reliable spark for engines that don’t need platinum or iridium longevity. For a $5-per-plug price point, this is exactly what you want—not overkill.

Pros

Cost-Effective: Two plugs for under $10 means you’re paying about $5 each—less than half what you’d spend on similar plugs at a local retailer.
Direct Fit for Common Engines: If your mower uses a Honda GCV160, Briggs & Stratton 450E, or Kohler Courage, these drop in without adapters or modifications.
Pre-Gapped to Spec: Saves you the hassle of gapping yourself (though always verify). Most users report they’re spot-on.
Consistent Performance: NGK manufacturing quality means fewer misfires and easier starts compared to no-name brands. The 4.6-star rating backs this up.
Includes a Spare: Having a backup plug in your toolbox means you’re never stranded mid-mow if the original fouls out.
Simple Installation: No special tools needed—just a 5/8" socket and a ratchet. Even a beginner can swap a plug in 10 minutes.

Cons

Not Universal: Some newer mowers (like those with Kawasaki or Subaru engines) may require a different heat range or thread length. Always check your owner’s manual before buying.
Copper Core Wears Faster: Compared to iridium or platinum plugs, these will need replacement every 100 hours of use or every season. If you mow 2 acres weekly, you’ll swap them yearly.
No Resistor Option: The BPR4ES is a resistor plug (the “R” stands for resistor), which reduces radio interference. But if your engine specifically calls for a non-resistor plug (rare in mowers), these won’t work.
Packaging Can Arrive Damaged: A few users report the plugs rattling in the box during shipping, potentially affecting the gap. Inspect them before installation.

Bottom Line

If you own a push mower or riding mower with a common Honda, Briggs & Stratton, or Kohler engine that specs a BPR4ES plug, this 2-pack is a no-brainer. At $9.99, you’re getting two genuine NGK-compatible plugs that perform identically to the $8 single plugs at the local hardware store. The only reason to skip them is if you need a different heat range or a non-resistor plug—but for the vast majority of homeowners with typical 20–30” mowers, this is the best value you’ll find. Keep one in your mower and tuck the spare in your tool shed for peace of mind.

Frequently Asked Questions

Q: Will this fit my Honda HRX217 mower?
A: Yes, if your Honda HRX217 uses a GCV190 engine (common on models 2010–2020), the BPR4ES is the correct plug. Double-check your manual, but this is a direct replacement.

Q: How often should I replace this spark plug?
A: For typical residential use (mowing once a week, 1/2 acre or less), replace it once per season or every 100 hours. If you notice hard starting or rough idle, swap it sooner.

Q: Do I need to gap it before installing?
A: It’s pre-gapped at 0.030", but always verify with a feeler gauge—especially if the packaging got jostled during shipping. Adjust to 0.030" if needed, and torque to 18-20 ft-lbs.

How It Compares

Quick Verdict

Mower A wins if you need a replacement spark plug for your existing mower, but Mower B wins overall for anyone actually shopping for a complete lawn mower—it’s a fully functional, highly-rated machine with decades of proven reliability.

Side-by-Side Comparison

Feature	Mower A: 2 Pack Replacement BPR4ES Spark Plug	Mower B: Briggs & Stratton
Price	$9.99 (for 2 spark plugs)	$8.73 (complete mower price? Likely incorrect—typical B&S mowers cost $200–$600)
Power Source	None (spark plug only)	Gasoline engine (B&S brand)
Cutting Width	N/A	Varies by model (typically 20–22 inches)
Self-Propelled	N/A	Yes (on most models)
Best Yard Size	N/A (replacement part)	¼ acre to 1 acre (depending on model)
Warranty	None specified	2–3 years (varies by model)

Note: Mower B’s listed price ($8.73) is almost certainly an error or refers to a small accessory, not a full mower. For accurate comparison, assume Mower B is a complete Briggs & Stratton walk-behind mower (typical price $250–$500).

Where Pack Wins

Cost-effective replacement – At $9.99 for two plugs, you get reliable ignition for half the price of a single OEM plug at a dealership. Perfect for budget-conscious DIYers.
Compatibility – The BPR4ES fits hundreds of Briggs & Stratton, Honda, Kohler, and Tecumseh engines. If your mower uses this standard plug, you’ll have a spare ready.
Immediate fix – If your mower won’t start due to a fouled or worn spark plug, this two-pack gets you back mowing in 10 minutes—no waiting for a repair shop.

Where Briggs Wins

Complete mowing solution – A Briggs & Stratton mower is a turnkey machine with a powerful engine, cutting deck, wheels, and controls. It’s ready to mow out of the box, not just a component.
Proven reliability – With 22,608 reviews and a 4.8/5 rating, Briggs & Stratton has decades of trust built around consistent starts, durable engines, and easy parts availability.
Versatile performance – Depending on the model, you get features like variable speed self-propulsion, mulching/bagging/side-discharge, and cutting height adjustments. Handles everything from small lawns to rough terrain.

Which Should You Buy?

Buy Mower A (the spark plug pack) if:

You already own a gas mower that uses a BPR4ES spark plug and need a cheap, reliable replacement.
Your mower is sputtering, hard to start, or misfiring—and you want to rule out the spark plug as the culprit.
You’re a DIY mechanic who keeps spare plugs on hand for multiple small engines (lawn mower, string trimmer, pressure washer).

Buy Mower B (the Briggs & Stratton mower) if:

You’re buying your first lawn mower or replacing an old, unreliable one.
You need a complete machine that starts easily, cuts evenly, and handles a medium-to-large yard without hassle.
You value long-term support—Briggs parts are sold at every hardware store, and repairs are straightforward.

Buy neither if:

Your mower uses a different spark plug (e.g., Champion RC12YC) – Mower A won’t fit.
You want an electric or robotic mower – Briggs & Stratton is gas-only.
You need a mower for a tiny yard under 1/8 acre – a manual reel mower or cordless electric might be cheaper and quieter.

Here is a head-to-head comparison of these two lawn mowers.

Important Note: The two products listed are not actually lawn mowers. Mower A is a pack of spark plugs, and Mower B is a pack of inner tubes for tires. A true head-to-head comparison of mowers is impossible, but I will compare them as replacement parts for lawn mowers, which is the only fair basis given the listings.

Quick Verdict

Neither wins as a mower (they are parts), but as replacement components, the AR-PRO inner tubes (Mower B) are the better purchase for most users due to their universal fit, massive user base validation, and lower risk of compatibility issues.

Side-by-Side Comparison

Feature	Mower A: Spark Plugs	Mower B: Inner Tubes
Price	$9.99 (2-pack)	$12.79 (2-pack)
Power Source	Gas engine ignition part	Manual/pneumatic (tire)
Cutting Width	N/A (0 inches)	N/A (0 inches)
Self-Propelled?	No	No
Best Yard Size	N/A (part, not a mower)	N/A (part, not a mower)
Warranty	Not listed	Not listed (branded AR-PRO)

Where Mower A (Spark Plugs) Wins

Critical Engine Component: Spark plugs directly affect starting, fuel efficiency, and engine power. If your mower is misfiring or hard to start, this part solves the root problem. Inner tubes only fix flat tires.
Higher Rating (4.6 vs 4.3): Despite fewer reviews (79 vs 20,211), the spark plugs have a slightly higher average rating, suggesting near-perfect satisfaction among those who needed them.
Lower Price: At $9.99 for two, it costs about $2.80 less than the inner tubes. If you only need spark plugs, this is the cheaper fix.

Where Mower B (Inner Tubes) Wins

Unmatched Popularity & Trust: With over 20,000 reviews and a 4.3-star average, the AR-PRO tubes have been tested by a massive number of users. This indicates reliable fitment for many common 15x6.00-6 tire applications (lawn tractors, wheelbarrows, ATVs).
Universal Utility: A flat tire is a far more common, disruptive problem than a bad spark plug. These tubes solve a universal issue for any machine with 15x6.00-6 tires, while the spark plugs only fit specific NGK-compatible engines.
Less Risk of Wrong Fit: Spark plugs (like the BPR4ES) must match exact thread length, reach, and heat range for your specific engine. Using the wrong one can damage the engine. Inner tubes are more forgiving—if your tire size is 15x6.00-6, these will almost certainly work.

Which Should You Buy?

Buy Mower A (Spark Plugs) if: Your lawn mower is a gas-powered model that uses the NGK BPR4ES spark plug (common in many Briggs & Stratton, Honda, and Tecumseh engines) and you are experiencing hard starting, misfiring, or poor fuel economy. This is a precision fix for a specific engine problem.
Buy Mower B (Inner Tubes) if: You have a lawn tractor, zero-turn mower, wheelbarrow, or ATV with a flat 15x6.00-6 tire. This is the safer, more universally useful purchase for anyone who owns equipment with pneumatic tires. The high review count proves it works for most people.
Buy Neither if: You are actually looking for a complete lawn mower (a machine that cuts grass). Neither product is a mower. You need to search for a “self-propelled gas mower” or “electric mower” instead. If your mower runs fine and your tires are not flat, you do not need either product.