Best Small Engine Spark Plug for Honda, Briggs & Stratton, and More

#1 · Best Overall

1. Honda BPR6ES

• Core Material: OEM HONDA "MADE IN JAPAN" RETAIL PACKAGING
• Top Material Type: OEM HONDA "MADE IN JAPAN" RETAIL PACKAGING
• Compatible with Vehicle Type: OEM HONDA "MADE IN JAPAN" RETAIL PACKAGING
• Thread Size: OEM HONDA "MADE IN JAPAN" RETAIL PACKAGING

Best for: Honda GCV engine service.

Why it ranks #1: The listing explicitly identifies this Honda plug for GCV160 and GCV190 engines, making it the clearest model-specific small-engine fit in this group.

Named compatibility with Honda GCV160 and GCV190 engines is the strongest buying cue for this Honda BPR6ES plug. The engine-family references help owners narrow the replacement search, while the 98079-56846 number gives a second identifier to compare with service documentation.

Honda’s additional description lists several GCV160 variants, including GCV160A, GCV160E, and GCV160LE, alongside GCV190 in the title. That specificity can make a fit check more direct than choosing by brand alone. The product is identified as a Honda small-engine spark plug and also called out for lawn mowers and tillers, connecting its stated engine range with common equipment types. Check the engine’s full designation and manual before installation.

Skip it if you need the BPR5ES designation; Honda 98079-55846 identifies that plug for most Honda small engines.

This is a focused option for owners checking a Honda GCV160 or GCV190 application, especially when the engine’s documentation specifies BPR6ES. Confirm the complete engine designation before installation; the description lists some, not all, variants.

Listed on Amazon as: Honda 98079-56846 (BPR6ES) Small Engine Spark Plug for GCV160, GCV190

#2 · Broad Honda Fit

2. Honda BPR5ES

• Core Material: Alloy Steel
• Top Material Type: Alloy Steel
• Compatible with Vehicle Type: Honda Engines
• Thread Size: 14mm or 16mm

Best for: Honda OEM plug match.

Why it ranks #2: This genuine Honda OEM NGK plug is listed for most Honda small engines and says it interchanges with other engines using the same plug.

Genuine Honda OEM identification, paired with the NGK BPR5ES designation, is the defining feature of this 98079-55846 plug. It gives Honda small-engine owners a named part and cross-brand plug reference to compare with their engine documentation before scheduling a replacement.

Honda says this plug fits most Honda small engines and also interchanges with other small engines that use the same spark plug. That stated interchangeability makes the BPR5ES designation useful when checking a non-Honda engine’s manual, rather than assuming brand alone establishes fit. Its listed alloy-steel core and top describe the construction, while the 14mm or 16mm thread-size entry makes verifying the exact engine specification important before installation.

Skip it if you need the listed BPR6ES for a GCV160 or GCV190; Honda 98079-56846 names those engines.

Choose this for a Honda small-engine owner whose documentation calls for the BPR5ES or this OEM number. The broad fit statement does not replace checking the engine’s exact plug designation and thread specification.

Listed on Amazon as: Genuine Honda OEM Spark Plug 98079-55846 (NGK BPR5ES) Honda & other small engines

#3 · Single-Plug Pick

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3. NGK BPR6ES

• Core Material: Copper
• Top Material Type: Metal
• Compatible with Vehicle Type: Car, Truck
• Thread Size: 14mm

Best for: Single NGK BPR6ES replacement.

Why it ranks #3: Its BPR6ES designation matches the Honda BPR6ES listing, and this NGK listing is explicitly described for Honda engines and other small engines.

A single genuine NGK Standard 7131 plug, identified as BPR6ES, makes this listing a targeted replacement rather than a multi-plug service set. Its named designation gives owners of Honda and other small engines a specific part to compare with the engine manual.

The title identifies Honda engines and other small engines, while the product details call out NGK Standard 7131 and BPR6ES. These paired references help when checking a manual that uses either the plug designation or NGK number. Copper core, metal top, and a listed 14mm thread provide additional specifications for confirming the required replacement. Because this is one plug, it suits a single replacement need; owners servicing multiple plugs should account for the quantity.

Skip it if you need two replacements together; Honda 98079-56846 is a named small-engine option, though it is also a single plug.

This suits an owner replacing one plug where the manual specifies BPR6ES or NGK 7131. Its single-plug quantity is the key boundary for maintenance planning, and the engine’s exact specification should determine fit.

Listed on Amazon as: BPR6ES NGK Spark Plug for Honda Engines & Other Small Engines (One Spark Plug)

#4 · J19LM Replacement

4. Briggs J19LM 2-Pack

• Core Material: Copper
• Top Material Type: Metal
• Compatible with Vehicle Type: [IN] Inferred: Lawn mowers, go-karts, and…
• Thread Size: 796112

Best for: Two-plug mower maintenance.

Why it ranks #4: This Briggs & Stratton two-pack explicitly replaces J19LM, RJ19LM, 802592, and 5095K, useful when one of those numbers matches the equipment manual.

The two-plug pack is the clearest advantage of this Briggs & Stratton 796112: it supplies a pair for maintenance rather than just one replacement. Its listed cross-references—J19LM, RJ19LM, 802592, and 5095K—give owners specific identifiers to compare against their engine’s required plug.

Copper core and a metal top identify the plug’s listed construction, while the two-piece pack gives you a spare for a later service or a second compatible engine. The cross-reference list is especially useful when a manual or existing plug uses a different listed number. The product information associates this plug with lawn mowers and also infers go-karts and possibly some generators or water pumps, so use the engine’s specified replacement number to establish application rather than relying on vehicle type alone.

Skip it if you need a documented fit for a particular engine model; Honda 98079-56846 lists GCV160 and GCV190 applications.

A mower owner with a manual or existing plug matching one of the listed cross-references can use this pair for planned service. Check the engine’s required part number first; the supplied information does not name specific engine models.

Listed on Amazon as: Briggs & Stratton 796112-2pk Spark Plug (2 Pack) Replaces J19LM, RJ19LM, 802592, 5095K by Briggs & Stratton

#5

5. Champion RJ19LM

• Core Material: Copper
• Top Material Type: Metal
• Compatible with Vehicle Type: Car, Truck
• Thread Size: 14mm

Best for: OEM Craftsman-compatible plug.

Why it ranks #5: The genuine OEM RJ19LM listing names Craftsman, Tecumseh, MTD, Sears, and Troybilt as compatible brands, giving buyers a specific replacement reference.

Champion’s genuine OEM RJ19LM designation is the central feature of this lawn-and-garden replacement plug. Its listing names Craftsman, Tecumseh, MTD, Sears, and Troy-Bilt as compatible brands, giving owners several equipment labels to cross-check against their service information.

The RJ19LM model number and 14mm thread provide concrete identifiers for comparison with an engine manual or the existing part. The listed compatible brands—Craftsman, Tecumseh, MTD, Sears, and Troy-Bilt—help narrow which equipment documentation to consult, but do not identify every engine model. Copper core and metal top are the stated construction details. The listing also recommends work gloves during installation, a practical handling note for routine replacement.

Skip it if you need a two-plug set; Briggs & Stratton 796112-2pk supplies two plugs and lists RJ19LM as a replacement reference.

This plug suits owners whose Craftsman, Tecumseh, MTD, Sears, or Troy-Bilt equipment specifies RJ19LM. The brand list is not an engine-by-engine fit guide, so verify the exact model and required plug before installation.

Listed on Amazon as: Champion RJ19LM Lawn & Garden Equipment Engine Spark Plug Genuine Original Equipment Manufacturer (OEM) Part

#6

6. Briggs 491055 2-Pack

• Core Material: Copper
• Top Material Type: Metal
• Compatible with Vehicle Type: Lawn Mower
• Thread Size: 491055

Best for: Two-plug mower replacement.

Why it ranks #6: This two-pack is identified as a genuine Briggs & Stratton replacement and lists lawn mower compatibility, but buyers should confirm the 491055 number.

Two genuine Briggs & Stratton 491055 plugs come together here, with listed replacements including 805015, 72347, and Champion RC12Y. That combination suits owners who want a spare on hand and a concrete set of cross-references to check against a mower’s service information.

The product is identified as compatible with lawn mowers, and its additional description lists Kohler CH11S engine variants among compatible applications. Those model references can narrow a buyer’s fit check beyond the general mower category. Copper core and metal top are the listed construction details; the two-plug quantity supports keeping a second replacement available. The listing advises consulting the owner’s manual for part identification and installation, a useful step given its multiple cross-references.

Skip it if you need a plug explicitly listed for Honda GCV160 or GCV190; Honda 98079-56846 names those engines.

This pair fits a mower owner whose manual or existing plug matches the 491055 cross-references, including the listed Kohler CH11S variants. Check the full engine model and manual before installation because the supplied compatibility details are partial.

Listed on Amazon as: Briggs & Stratton 491055-2pk Spark Plug (2 Pack) Replaces 805015/72347/491055/Champion RC12Y

#7

7. NGK BPMR7A 2-Pack

• Core Material: Copper
• Top Material Type: Metal
• Compatible with Vehicle Type: Car, Truck
• Thread Size: 14mm

Best for: NGK BPMR7A two-pack.

Why it ranks #7: The listing supplies the BPMR7A designation, copper core, and two-plug format, though its stated vehicle types are car and truck rather than small engines.

The NGK BPMR7A designation and two-plug quantity are the clearest reasons to consider this boxed pair. Buyers with equipment documentation calling for that exact plug can use the model number and listed 14mm thread and 0.03-inch gap as concrete details for a replacement check.

Both included plugs are identified as NGK 6703, so the product number and model designation provide two references to compare with the required part. The listed copper core and metal top describe its construction, while the 14mm thread and 0.03-inch gap supply specific measurements to check against equipment requirements. NGK’s feature text says the plug supports reliable starts and smooth operation under normal conditions; application fit still depends on the engine calling for BPMR7A.

Skip it if you need an explicitly named Honda small-engine fit; Honda 98079-56846 lists GCV160 and GCV190.

Choose this pair when the engine’s manual specifies NGK BPMR7A and the listed dimensions match. The supplied compatibility details do not name small-engine models, so verify the exact application rather than selecting it by brand alone.

Listed on Amazon as: NGK (6703) BPMR7A Spark Plugs Individual Boxed – 2 Pack, Copper

#8

8. Champion M78543 2-Pack

• Core Material: Copper or Platinum or Iridium
• Top Material Type: Nickel
• Compatible with Vehicle Type: ATV, Tractor, UTV
• Thread Size: 14mm x 1.25mm

Best for: John Deere M78543 pair.

Why it ranks #8: The listing connects this Champion two-pack with John Deere M78543 and M87543 applications and identifies tractor compatibility, but provides limited engine-specific detail.

John Deere M78543 identification is the practical differentiator of this two-plug Champion set, which also names M87543 and an RC12YC engine reference. Owners can use those designations to compare the replacement with a John Deere tractor, ATV, or UTV’s service information.

The listing calls M78543 a John Deere original-equipment spark plug and identifies ATV, tractor, and UTV as compatible vehicle types. Those details help buyers narrow an application, while the M87543 and RC12YC references offer further numbers to check against the equipment’s documentation. The 14mm x 1.25mm thread specification supports a more precise comparison before installation. Two plugs are included, so the set supplies a second replacement for subsequent maintenance or another matching unit.

Skip it if you need a named Honda GCV160 or GCV190 fit; Honda 98079-56846 lists those engine families.

A John Deere equipment owner can use the M78543 and M87543 references to check this pair against a manual, including for listed tractor, ATV, or UTV types. Verify the engine application because specific engine models are not supplied.

Listed on Amazon as: (Pack of 2) Champion Spark Plugs for John Deere M78543, M87543, RC12YC Engine

#9

9. Briggs 496018 2-Pack

• Core Material: Copper
• Top Material Type: Metal
• Compatible with Vehicle Type: Lawn Mower
• Thread Size: RM

Best for: Briggs OHV engine pair.

Why it ranks #9: This genuine Briggs & Stratton two-pack is specified for OHV engines and replaces 5066K and RC14YC, but its compatibility details are less specific.

The OHV-engine positioning and two-plug pack distinguish this Briggs & Stratton 496018 set. Its listed replacements—5066K and Champion RC14YC—give owners specific numbers to compare with their engine’s service information before choosing a pair for maintenance.

The listing identifies the plugs for OHV engines and lawn mowers, then supplies Briggs & Stratton engine references including model 93400 and 19E400. Those details help narrow the application beyond the general product title. Copper core and metal top are the stated construction features, while two plugs provide a second replacement for later service or another matching engine. The seller advises consulting the owner’s manual for part identification and installation, making the engine model an important fit check.

Skip it if you need named Honda GCV160 or GCV190 compatibility; Honda 98079-56846 lists those engine families.

This set suits owners of listed Briggs & Stratton OHV mower applications who can match 496018, 5066K, or RC14YC to their manual. Confirm the engine model and plug specification before installation.

Listed on Amazon as: Briggs & Stratton 496018-2pk Spark Plug (2 Pack) For OHV Engines Replaces 5066K, RC14YC

#10

10. Champion RC12YC 2-Pack

• Core Material: Copper
• Top Material Type: Metal
• Compatible with Vehicle Type: Car, Truck
• Thread Size: 14×19

Best for: Craftsman RC12YC pair.

Why it ranks #10: Although it includes two genuine RC12YC plugs and lists Craftsman applications, the supplied compatibility information is less clearly focused on small engines.

Two genuine Champion RC12YC plugs, with a listed 0.04-inch gap, define this replacement set for buyers matching a Craftsman application. The specific plug designation and gap make it easier to compare the package with equipment documentation before undertaking routine engine service.

The RC12YC designation is repeated in the title and product details, and the listing supplies Craftsman model references, giving owners concrete identifiers for a fit check. A copper core and metal top describe the plug construction; the 14×19 thread and 0.04-inch gap add specifications to compare with the equipment manual. With two plugs included, the set provides a second replacement for a later service. The listing advises consulting the owner’s manual for correct identification and installation.

Skip it if you need a plug specifically identified for Honda GCV160 or GCV190; Honda 98079-56846 lists those engines.

Consider this pair when your Craftsman equipment documentation specifies RC12YC and the listed dimensions. It offers a second plug for future service, but model references and the owner’s manual should guide fit and installation.

Listed on Amazon as: Champion Spark Plug for Craftsman (2 Pack) # 71G RC12YC-2pk