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Engine Parts & Service

Keep your vessel running at peak performance with high-quality marine engine parts and service essentials designed for dependable operation in demanding freshwater and saltwater environments. Our Engine Parts & Service collection features premium replacement parts, maintenance components, and service supplies to help extend engine life, improve reliability, and reduce unexpected downtime. From oil filters, fuel filters, impellers, belts, spark plugs, thermostats, anodes, gaskets, water pumps, lubricants, and tune-up kits to essential engine maintenance accessories, you'll find the components needed for routine servicing and repairs. Regular maintenance with quality marine engine parts helps maximize fuel efficiency, protect critical engine systems, and ensure dependable performance season after season.

Featuring products from trusted marine manufacturers for a wide range of inboard and outboard engines, our Engine Parts & Service collection delivers the quality and durability serious boaters expect. Browse our selection today and let our knowledgeable team help you find the right parts to keep your engine performing at its best.

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  • Trident Marine Blue Silicone Wet Exhaust Hump w/4 T-Bolt Clamps - 6" ID x 8" Length [272V6000-S/S]
    Trident Marine

    Trident Marine Blue Silicone Wet Exhaust Hump w/4 T-Bolt Clamps - 6" ID x 8" Length [272V6000-S/S]

    $233.23
    $362.03
    $233.23
    Blue Silicone Wet Exhaust Hump with 4 T-Bolt Clamps - 6" ID x 8" LengthTrident Silicone Hump Hose Bellows provide the ultimate flexible connectors for marine wet exhaust systems. They offer much greater tolerance to heat, misalignment, engine movement, and vibration, with significant savings...
    $233.23
    $362.03
    $233.23
  • Star brite Star-Tron Fuel Tank Cleaner - Concentrated Gas/Diesel Formula - 64 oz [93664]
    Star brite

    Star brite Star-Tron Fuel Tank Cleaner - Concentrated Gas/Diesel Formula - 64 oz [93664]

    $54.46
    $60.04
    $54.46
    Star-Tron Fuel Tank Cleaner - Concentrated Gas/Diesel Formula - 64 ozCleans sludge and fuel contaminants from gasoline and diesel tanks without expensive polishing. Designed for fuel tanks requiring rejuvenation of old, stale fuel. The enzyme-based formula disperses deposits for a cost-effective alternative to professional...
    $54.46
    $60.04
    $54.46
  • Attwood Universal Fuel Line Kit - 3/8" Diameter x 6 Length [93806ULP7]
    Attwood Marine

    Attwood Universal Fuel Line Kit - 3/8" Diameter x 6 Length [93806ULP7]

    $53.06
    $69.82
    $53.06
    Universal Fuel Line Kit - 3/8" Diameter x 6' LengthThis Attwood Fuel Line Kit is a reliable universal replacement for the original equipment on any brand of engines and tanks. This kit includes a 6-foot-long, 3/8-In. diameter fuel line and a multi-layer, low-permeation primer...
    $53.06
    $69.82
    $53.06
  • Sea-Dog Inboard Motor Flush [521550-1]
    Sea-Dog

    Sea-Dog Inboard Motor Flush [521550-1]

    $26.52
    $35.27
    $26.52
    Inboard Motor FlushMolded Rubber/Aluminum Inboard Motor Flush quickly flushes away salt, sand, minerals, and contaminates from your lower unit cooling system extending the engine’s service life. Easy-to-use by fitting the rubber cup over the water intake, connecting a garden hose, and extending the aluminum leg...
    $26.52
    $35.27
    $26.52
  • Star brite Star-Tron Enzyme Diesel Treatment - Small Engine Formula - 8 oz [14408]
    Star brite

    Star brite Star-Tron Enzyme Diesel Treatment - Small Engine Formula - 8 oz [14408]

    $16.75
    $19.54
    $16.75
    Star-Tron Enzyme Diesel Treatment - Small Engine Formula - 8 ozImproves diesel engine starts, smoothness, and fuel economy while reducing soot and emissions. Designed for all types and sizes of diesel engines. The formula stabilizes diesel fuel for up to two years and helps...
    $16.75
    $19.54
    $16.75
  • Balmar Pulley Kit f/Volvo D2-55, A, B, C, D, E, F [48-VSP-D2-A]
    Balmar

    Balmar Pulley Kit f/Volvo D2-55, A, B, C, D, E, F [48-VSP-D2-A]

    $963.00
    $0.00
    $963.00
    Pulley Kit for Volvo D2-55, A, B, C, D, E, FAltMount® Serpentine Pulley Conversion Kit for Volvo Penta Diesel EnginesVolvo Penta Engines Covered: D2-55A, B, C, D, E, FKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 44″ Circumference Serpentine Belts (one spare) & Mounting...
    $963.00
    $0.00
    $963.00
  • Balmar Pulley Kit f/Yanmar 4JH3-TE, 4JH3-HTE [48-YSP-4JH-D]
    Balmar

    Balmar Pulley Kit f/Yanmar 4JH3-TE, 4JH3-HTE [48-YSP-4JH-D]

    $963.00
    $0.00
    $963.00
    Pulley Kit for Yanmar 4JH3-TE, 4JH3-HTEAltMount®Serpentine Pulley Conversion Kit for Yanmar Diesel EnginesYanmar Engines Covered: 4JH3, -TE, -THEKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 48″ Circumference Serpentine Belts (one spare) & Mounting HardwareNote: If you specify an AT-200A Alternator, a longer belt length...
    $963.00
    $0.00
    $963.00
  • Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-100-DV]
    Balmar

    Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-100-DV]

    $981.85
    $1,168.87
    $981.85
    Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley with Isolated GroundAlternator, 621 Series, 100A, 12V, Spindle Mount (Single Foot), 1-2in, Dual Deep Vee Pulley, Isolated Ground 1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines 2" Delco-Style Mounting;...
    $981.85
    $1,168.87
    $981.85
  • Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-100-DV]
    Balmar

    Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-100-DV]

    $1,319.85
    $1,571.11
    $1,319.85
    Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator & Temp SensorKIt Includes: 621-100-DV Alternator, MC-618 Regulator, Temperature Sensors, Mounting Hardware621-100-DV Alternator: 100A, 12V, Spindle Mount (Single Foot), 1-2in, Dual Deep Vee Pulley, Isolated Ground1" Motorola-Style Mounting;  Typical for...
    $1,319.85
    $1,571.11
    $1,319.85
  • Balmar Alternator Protection Module - 48V [APM-48]
    Balmar

    Balmar Alternator Protection Module - 48V [APM-48]

    $202.50
    $229.60
    $202.50
    Alternator Protection Module - 48VThe Balmar APM provides best-in-class surge protection using the latest technology developed for the automotive industry. Protect Alternators From Damaging Effects: Battery switch disconnects Lithium battery BMS disconnects Surges from solenoids, combiners, starters, and other motors. The Balmar APM excels in...
    $202.50
    $229.60
    $202.50
  • Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-120-DV]
    Balmar

    Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-120-DV]

    $1,061.46
    $1,263.56
    $1,061.46
    Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley with Isolated GroundAlternator, 621 Series, 120A, 12V, Spindle Mount (Single Foot), 1-2in, Dual Deep Vee Pulley, Isolated Ground 1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines 2" Delco-Style Mounting;...
    $1,061.46
    $1,263.56
    $1,061.46
  • Balmar Regulator Kit f/Valeo w/MC-618 [MC-618-VL-01]
    Balmar

    Balmar Regulator Kit f/Valeo w/MC-618 [MC-618-VL-01]

    $770.95
    $918.02
    $770.95
    Regulator Kit for Valeo with MC-618Balmar's MC-618 Regulator communicates with the SG200 Battery Monitor to provide information to the SG200 Color Display and Smartphone App.  Now you can see how the MC-618 Regulator is directing your onboard charging activity from either the SG200 2"...
    $770.95
    $918.02
    $770.95
  • STA-BIL In-Season Protection - 32oz *Case of 6* [22275CASE]
    STA-BIL

    STA-BIL In-Season Protection - 32oz *Case of 6* [22275CASE]

    $122.89
    $163.33
    $122.89
    In-Season Protection - 32oz *Case of 6*Features: America’s #1 Ethanol Treatment Use STA-BIL 360 Protection at every fill-up Keeps fuel fresh for up to 12 months STA-BIL In-Season Protection Fuel System Treatment cleans the fuel system to increase power and fuel efficiency Prevents corrosion...
    $122.89
    $163.33
    $122.89
  • Balmar Alternator 170 Amp, 12V Single Foot Internal Regulator K6 Pulley [XT-SF-170-IR]
    Balmar

    Balmar Alternator 170 Amp, 12V Single Foot Internal Regulator K6 Pulley [XT-SF-170-IR]

    $819.84
    $854.20
    $819.84
    Alternator 170 Amp, 12V Single Foot Internal Regulator K6 PulleyAlternator, XT Series, 170A, 12V, Spindle Mount (Single Foot), 1-2in, K6 Serpentine Pulley, Case Ground1″ Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines2″ Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John...
    $819.84
    $854.20
    $819.84
  • Balmar Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley Regulator Temp Sensor - 170A Kit - 12V [XT-DF-170-J10-KIT]
    Balmar

    Balmar Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley Regulator Temp Sensor - 170A Kit - 12V [XT-DF-170-J10-KIT]

    $1,750.03
    $2,082.02
    $1,750.03
    Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley Regulator & Temp Sensor - 170A Kit - 12VBalmar offers a wide range of alternator power upgrades designed specifically for marine industry applications. Balmar installs high reliability bearings, robust rectifier diodes and improved heat-sinking capabilities on...
    $1,750.03
    $2,082.02
    $1,750.03
  • Balmar Universal Adjustment Arm [UAA]
    Balmar

    Balmar Universal Adjustment Arm [UAA]

    $53.06
    $60.18
    $53.06
    Universal Adjustment ArmFeatures: This part number is for the “Arm Only”, It does not come with the Belt Buddy Adjustment Mechanism The Belt Buddy Mechanism which goes with the UAA is part number BB, grouped together the set is part number UBB The Belt...
    $53.06
    $60.18
    $53.06
  • Balmar Belt Buddy w/Universal Adjustment Arm [UBB]
    Balmar

    Balmar Belt Buddy w/Universal Adjustment Arm [UBB]

    $108.93
    $123.17
    $108.93
    Belt Buddy w/Universal Adjustment ArmTo utilize only the adjustment mechanism with an existing adjustment arm, purchase part number BBU.Caution:  This approach sacrifices some “travel” in the existing adjustment arm so the BBU mechanism can be anchored to the arm.  Make certain your alternator mounting...
    $108.93
    $123.17
    $108.93
  • Balmar Belt Buddy w/o Adjustment Arm [BBU]
    Balmar

    Balmar Belt Buddy w/o Adjustment Arm [BBU]

    $76.80
    $86.30
    $76.80
    Belt Buddy w/o Adjustment ArmUniversal Belt Buddy Mechanism;  for use with exising adjustment armsDoes not come with the Balmar Universal Adjustment Arm (UAA).Caution:  This approach sacrifices some “travel” in the existing adjustment arm so the BBU mechanism can be anchored to the arm.  Make...
    $76.80
    $86.30
    $76.80
  • Balmar Alternator 120 Amp 12V 3.15" Dual foot Saddle Single K6 Pulley w/Isolated Grounding [60-120-K6]
    Balmar

    Balmar Alternator 120 Amp 12V 3.15" Dual foot Saddle Single K6 Pulley w/Isolated Grounding [60-120-K6]

    $1,061.46
    $1,263.56
    $1,061.46
    Alternator 120 Amp 12V 3.15" Dual foot Saddle Single K6 Pulley with Isolated GroundingAlternator, 60 Series, 120A, 12V, Saddle Mount (Dual Foot), 3.15in, K6 Serpentine Pulley, Isolated Ground Hitachi-Style Mounting; Typical for Yanmar, Westerbeke, Lehman & Perkins-Sabre Engines.This product may not be returned to...
    $1,061.46
    $1,263.56
    $1,061.46
  • ARCO Marine Premium Replacement Rotor f/Mercruiser Inboard Engines 2001-Present [DR002]
    ARCO Marine

    ARCO Marine Premium Replacement Rotor f/Mercruiser Inboard Engines 2001-Present [DR002]

    $19.54
    $27.49
    $19.54
    Premium Replacement Rotor for Mercruiser Inboard Engines 2001-PresentThis rotor fits PCM Models MP 5.0L, 5.7L (2002-05), Mercruiser 2001 and Newer, MCM/MIE 4.3L, 5.0L, 5.7L & 6.2L MPI Engines With ECM 555 Delco HVS DistributorsReplaces: MERCRUISER Rotor 884790 MERCRUISER Rotor 898253013 MERCRUISER Rotor 8M6001222 VOLVO...
    $19.54
    $27.49
    $19.54