Mercury 2 Ring Standard Bore Inline Pistons

Blowout
Save 26%-29% Off.
 
Low Dome Piston Kit - Sierra
Your Price: $114.08 Discontinued
Save: $24.92
(17% Off $139.00)
Part # 18-4500
No Reviews | Write Review
2 Ring Standard Bore Inline Piston Kit High Dome - Sierra
Your Price: $98.44
Save: $34.23
(25% Off $132.67)
Part # 18-4505
SHIPS TOMORROW!* if ordered in 21 hrs. Replaces OEM part #
  • MERCURY MARINE 774-9137A12
  • MERCURY MARINE 776-8896A3
  • MERCURY MARINE 776-8899A3
For 2-Ring Pistons:
  • 35-140 Hp, 2-6 Cyl., 2.875/Std. bore
Contains:
    18-4505 Piston - replaces O.E# 774-9137A12
    18-3918 Piston Rings - replaces O.E# 39-817096A6
    Wrist Pin (not sold separately)
    18-4294 Circlips - replaces O.E.# 40-52035

For 3-Ring Pistons:
  • 35-140 HP, 2-6 Cyl., 2.875/Std. bore
  • Contains:
      18-1405 Piston - replaces O.E.# 776-8896A3
      18-3902 Piston Ring - replaces O.E.# 39-78816A12
      Wrist Pin (not sold separately)
      18-4294 Circlips - replaces O.E.# 40-52035
  • 2 Ring Standard Bore Inline Piston Kit - Sierra
    Your Price: $108.99
    Save: $26.80
    (19% Off $135.79)
    Part # 18-4620
    SHIPS TOMORROW!* if ordered in 21 hrs.
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 780-9229A7
    For:
      40-50 HP, 4 Cyl., 2.565/std bore
    Contains:
      18-4620 Piston - replaces O.E.# 780-9229A7
      18-3966 Piston Ring -replaces O.E.# 39-18653A12
      Wrist Pin ( Not Sold Separately)
      18-4294 Circlips - replaces O.E.#40-52035
    2 Ring Standard Bore Inline Piston Kit - Sierra
    Your Price: $116.99
    Save: $34.58
    (22% Off $151.57)
    Part # 18-4623
    SHIPS TOMORROW!* if ordered in 21 hrs.
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 777-815965T4
    For:
      70-115 HP, 3-4 Cyl., 3.375/Std bore
    Contains:
      18-4623 Piston - replaces O.E.# 777-815965T4
      18-3979 Piston Ring - replaces O.E.# 39-96170A12
      Wrist Pin ( Not Sold Separately)
      18-4294 Circlips - replaces O.E.# 40-52035
    2 Ring Standard Bore Inline Piston Kit - Sierra
    Your Price: $116.99
    Save: $35.78
    (23% Off $152.77)
    Part # 18-4626
    SHIPS TOMORROW!* if ordered in 21 hrs.
    Hurry! Only 1 left in stock
    No Reviews | Write Review
    Replaces OEM part #
    • MERCURY MARINE 2704-826191T4
    For:
      75-125 HP, 3-4 Cyl, 3.375/Std. bore
    Contains:
      18-4626 Piston - replaces O.E.# 2704-826191T4
      18-3982 Piston Ring - replaces O.E.# 39-822321A12
      Wrist Pin (Not Sold Separately)
      18-4294 Circlips replaces O.E.# 40-52035
    Mallory Piston Std 9-53250
    Mallory Piston Std 9-53250
    Spring Sale Price: $112.99 (Out of stock)
    Save: $39.78
    (26% Off $152.77)
    Part # 9-53250
    No Reviews | Write Review
    Replaces Original Equipment Manufacturer(OEM):Mercury
    Replaces Original Equipment Manufacturer # (OEM #):2704-826191T4
    Fits Application:75-125 HP w/3.5 Bore
    Mallory Piston Std 9-53246
    Mallory Piston Std 9-53246
    Spring Sale Price: $106.99
    Save: $44.58
    (29% Off $151.57)
    Part # 9-53246
    SHIPS TOMORROW!* if ordered in 21 hrs.
    Hurry! Only 1 left in stock
    No Reviews | Write Review
    Replaces Original Equipment Manufacturer(OEM):Mercury
    Replaces Original Equipment Manufacturer # (OEM #):777-815965T4
    Fits Application:70/75/90/100/115 w/3.375 Bore & Rod #646-818846 T.GUIDED
    Sierra
    Based On 3 Reviews
    Review for Sierra 18- 4505 Mercury/Mariner Piston Kit - High Dome by a CustomerApril 20, 2009
    Everything that I have ordered to date has come with great speed and accuracy. This is deeply appriciated. Keep up the great work. Thank You. Dave Fether
    (6 of 6 people found this review helpful)
    Was this review helpful?
    Great part, Great price by Kyle - Saint Paul, MinnesotaApril 27, 2012
    These fit perfectly and were much cheaper than I have found on other sites. We bought these for our '78 Mercury 402 and they fit perfectly. Our motor has never ran better!
    (1 of 1 people found this review helpful)
    Was this review helpful?
    piston by Lawrence - Sacramento, CaliforniaJanuary 31, 2014
    Just what I needed.
    Was this review helpful?
    This product ships in 1 business day.

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    Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!
    Great Boating Days are Ahead!
    Enjoy Extra Discounts 5-20% Off During the SPRING SAVINGS SALE!