Mercury 135 - 200 Hp Bottom Guided - 100-19-07PK, 9737T4 .040 SIZE PORT SIDE

Mercury 135 - 200 Hp Bottom Guided - 100-19-07PK, 9737T4 .040 SIZE PORT SIDE

Marsoni

M251S

$128.74

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

Mercury 135 - 200 Hp Bottom Guided - 100-19-07PK, 9737T4 .040 SIZE PORT SIDEITEM#: 100 19 07PK PISTON KIT MERCURY MARINER 135 200 HP 90 91 PORT . 040 OVER NOTE: 3. 540" BOTTOM GUIDED BRAND: WSM FITMENTS: Make Model Year(s) Mariner ALL Mercury 6 Cyl 3. 125 Bore 2L 135 1990 1991 Mercury 6 Cyl 3. 125 Bore 2L 150 1990 1991 Mercury 6 Cyl 3. 375 Chrome Bore 2. 4L 175 1990 1991 Mercury 6 Cyl 3. 375 Steel Bore 2. 4L XR 4 150 1990 1991 Mercury 6 Cyl 3. 501 Bore 2. 5L 200 1991 Mercury 6 Cyl 3. 501 Bore 2. 5L EFI 175 1990 1991 Mercury 6

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Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.

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Reviewed in the United States on February 26, 2024

Verified Purchase

Carl L. Bradley

Lexington, US

★★★★★ 1

Kinda flimsy…

Thought the assembly was metal, it’s some kind of PVC.

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Reviewed in the United States on September 22, 2025

Verified Purchase

Michelle bullard