PISTON KIT MERCURY 175 -250 HP 2.5L SPORT JET '97-'06 PORT .010 OVER 100-21-04pk

PISTON KIT MERCURY 175 -250 HP 2.5L SPORT JET '97-'06 PORT .010 OVER 100-21-04pk

Marsoni

M251S

$121.77

Get it in 3 business days with 1 day shipping. Friday, May 29

PISTON KIT MERCURY 175 -250 HP 2.5L SPORT JET '97-'06 PORT .010 OVER 100-21-04pkITEM#: 100 21 04pK PISTON KIT MERCURY MARINER 175 250 HP 2. 5L SPORT JET 97 06 port . 010 OVER NOTE: 3. 510" BRAND: WSM 1. 5mm THICK rings FITMENTS: Make Model Year(s) Mariner ALL Mercury 6 Cyl 3. 501 Bore 2. 5L Sport Jet 175 1997 2004 Mercury 6 Cyl 3. 501 Bore 2. 5L Sport Jet 200 2001 2006 Mercury 6 Cyl 3. 501 Bore 2. 5L Sport Jet 210 2000 2005 Mercury 6 Cyl 3. 501 Bore 2. 5L Sport Jet 240 2001 2006 Mercury 6 Cyl 3. 501 Bore 2. 5L Sport Jet 250 2002

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Smooth starting came after I fitted these Bosch 9614 double iridium plugs into my 2014 Honda Accord Sport, along with slightly better idling behavior. Longevity might come from those fine iridium tips; installing them felt straightforward enough. Yet here's the catch - the 9614 doesn't match what the factory actually specifies for the 2.4L engine in that year’s Accord. Most often, it's the 9694 or some other OEM-recommended plug you’d want instead

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Reviewed in the United States on December 30, 2025

Verified Purchase

Akram M.

Lake Worth, US

★★★★★ 5

Great plug

Not sure about gas mileage, but these definitely improved the performance of my little 1.8 L Honda Civic, not sure if it’s because the old Plex were just old and weak or just because these are that much better. Acceleration is much better and engine or idle is much smoother

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Reviewed in the United States on September 28, 2025

Verified Purchase

Kheino Campbell

Natrona Heights, US

★★★★★ 5

Very affordable compare to the Honda OE

Prefect fit and very affordable for the brand.

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Reviewed in the United States on March 22, 2026

Verified Purchase

Bee J Xiong

Draper, US

★★★★★ 5

very good spark plugs for me.

i bought a 4 pack of BOSCH 9614 OE Fine Wire Double Iridium Spark Plug - Pack of 4 from Amazon prime i am just a regular dude i don't get reward or get free stuffs or free spark plugs, from this review...had my cousin install these BOSCH 9614 OE Fine Wire Double Iridium Spark Plug - Pack of 4...drove it right away i can tell a big difference seems a little more power and it purrs so smooth lols..and it sparks up right away for the engine to start smoothly i can tell a difference for sure. i recommend this for hondas dunno about the rest but i have some regular bosch spark plugs in my toyota too the cheapest one Bosch Platinum Spark Plug 6702, though but still good...just wanted to try the better expensive spark plugs and can tell a difference.. so yea i do recommend these for ur hondas..peace out.

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Reviewed in the United States on October 19, 2024

Verified Purchase

Tim

Chelsea, US

★★★★★ 5

Bosch is a good product in any form

I had used these plugs before in my 03 Honda Element and they performed well for 5 years or more so I considered these for use in my now 07 Honda CRV.

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Reviewed in the United States on January 13, 2026