Sierra Marine Engine Parts & Drive Parts   Sierra Marine is a trusted name in aftermarket replacement boat engine and drive parts. Sierra’s products are designed and engineered to exceed the high horsepower demands of today’s engines in the harshest marine environments. All Sierra products meet or exceed the original equipment part it replaces.   If you need help finding a part, we need, Make, Model, Year, Horsepower, and Serial number of your engine.   Warning: We can no longer ship engine parts International or to California Due to Prop 65.

ST Blade Fuse Block With Cover - 6 Circuit without Negative Bus Part# 5035 Can be used for 24-hour circuits Cover satisfies ABYC/USCG requirements for insulation, incorporates an easy to open push button latch providing easy access to fuses, storage for two spare fuses, and label recesses that accept Blue Sea Systems' Small Format Labels for circuit identification Fuse blocks with covers include 20 write-on circuit labels Tin-plated copper buses and fuse clips Accepts ring or spade type terminals Accepts ATO® and ATC® fast acting blade fuses Fuses sold separately WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Blue Sea Systems Products on Water or Land In addition to the marine industry, Blue Sea Systems products can be found on emergency vehicles, RVs, agricultural equipment, off-road vehicles, and other industries where rugged, dependable products are required. 7650 Add-A-Battery Add-a-Battery simplifies switching and automates charging for a complete two battery bank management solution.  The Dual Circuit Plus™ Battery Switch isolates engine and house circuits and combines battery banks for emergency starting. WeatherDeck 4376 Water Resistant Circuit Breaker Panel The 4376 WeatherDeck is a water resistant circuit breaker panel with 6 positions.  It is rated IP67 for temporary immersion for 30 minutes.  The 4376 is designed for flybridge and open cockpit applications. 5025 ST Blade Fuse Block with Cover The 5025 ST Blade Fuse Block with a clear, insulating cover has 6 circuits and a negative bus.  The 5025 can be used for 24-circuits and has a positive distribution bus with a #10-32 stud.  Models are available with or without a cover. 7748 SafetyHub 150 Fuse Block The SafetyHub 150 is an ignition protected fuse block with screw termination. It is safe for use on gasoline powered boats, reduces wiring connections, and consolidates up to ten fused circuits. It can be used for Main or Branch DC power distribution.

ST Blade Compact Fuse Blocks - 4 Circuits w/Cover Provides surface mount circuit protection for ATO®/ATC® Fuses in a compact footprint. The single side design allows wire entry from one side to maximize space. Compact common source fuse block Accepts ATO® and ATC® fast acting blade fuses Single side entry wiring Ignition Protected-meets ISO 8846 and SAE J1171 for use in a gasoline engine compartment Insulating cover meets ABYC/USCG insulation requirements Tin-plated copper buses and fuse clips Accepts ring or snap fork type terminals Small format standard and custom labels available Specifications Circuits:4 Maximum Amperage: 100A per block / 30A per circuit Maximum Voltage:32V DC Mounting: #8 Screw (M4) Screw Terminal Torque:#8-32 Screws with captive star lock washer in-lb (0 Nm) WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

ST Blade Compact Fuse Blocks - 8 Circuits w/Cover Provides surface mount circuit protection for ATO®/ATC® Fuses in a compact footprint. The single side design allows wire entry from one side to maximize space. Compact common source fuse block Accepts ATO® and ATC® fast acting blade fuses Single side entry wiring Ignition Protected-meets ISO 8846 and SAE J1171 for use in a gasoline engine compartment Insulating cover meets ABYC/USCG insulation requirements Tin-plated copper buses and fuse clips Accepts ring or snap fork type terminals Small format standard and custom labels available Specifications Circuits:8 Maximum Amperage: 100A per block / 30A per circuit Maximum Voltage:32V DC Mounting: #8 Screw (M4) Screw Terminal Torque:#8-32 Screws with captive star lock washer in-lb (0 Nm) WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

MRBF Surface Mount 3 Circuit Fuse Block - Common Source Surface mount fuse blocks accommodate three MRBF fuses for consolidated high amperage circuit protection The independent source fuse block (5194) is ideal for 3 output battery chargers The common source fuse block (5196) provides 3 loads from a single source Clip-on cover insulates terminal connections Versatile wiring options allow all wires to come out a single side Label recesses for easy circuit identification One-piece stainless flange nuts ensure safe and secure connections Specifications Ignition Protected: Yes Maximum Amperage: 300a per block/240a per circuit Maximum Voltage: 58v DC Maximum Torque: 100 in-lb Terminal Stud Size: M8 (5/16"-18) WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

5056 ST-Blade Water Resistant Fuse Block with Cover Provides water-resistant circuit protection for ATO/ATC fuses & circuit breakers in a compact footprint. The single side nesting design allows for wire entry from one side to maximize space. Features: Water-resistant design with standard ring or fork type terminals allows for simple wiring with standard tools Accepts a wide range of wire sizes Includes 3 wire plugs to maintain water resistant rating if less than 4 loads are required Accepts ATO and ATC fast-acting blade fuses Accepts ATO/ATC-Style Low Profile Circuit Breakers Nests with other ST-Blade Water-Resistant Fuse Blocks and Water-Resistant 100A Bus Bars to reduce wire Insulating cover meets ABYC/USCG insulation requirements Tin-plated copper busses and fuse clips Includes four write-on circuit labels Small format standard and custom labels available Spare fuse and fastener storage in cover Specifications: Amperage: 80A per block/25A per circuit Maximum Voltage: 32V DC Bus Material: Tin-Plated Copper C11000 Mounting Holes: Clearance for 1/4" (6mm) screws Screw Terminal Type: #8-32 Screws with captive star lock washer  Wire Size: (1) 8 AWG to 4 AWG - Input/(5) 16 AWG to 10 AWG - Load WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

5056100 - Water Resistant ST-Blade Fuse Block with Cover This Blue Sea fuse block provides water-resistant circuit protection for ATO/ATC fuses and circuit breakers in a compact footprint.  Now with wing screws for toolless access. Features: Water-resistant design with a standard ring or spade-type terminals Allows for simple wiring with standard tools Accepts a wide range of wire sizes Includes 3 wire plugs to maintain a water-resistant rating if less than 4 loads are required Accepts ATO and ATC fast acting blade fuses Accepts ATO/ATC-Style Low Profile Circuit Breakers Nests with other ST-Blade water-resistant fuse blocks and water-resistant 100A busbars to reduce wire 5056100 meets ABYC/USCG insulation requirements Tin-plated copper busses and fuse clips Includes four write-on circuit labels Spare fuse and fastener storage in cover Wing screws designed for tool-free installation of cover to meet ABYC compliance Technical Specifications: Cover - yes Maximum Voltage - 32V DC Bus Material - Tin-plated Copper Mounting Holes - Accepts 1/4" (6mm) screws Terminal Screws - 4 x # 8-32 with captive star lock washer Wire Size - Input - (1) 8 AWG to 4 AWG  Wire Size - Load - (4) 16 AWG to 10 AWG  In the Box: 5056100 Busbar Instruction Manual *Sold as an Individual

ST Blade Fuse Block w/o Cover - 6 Circuit w/o Negative Bus Part# 5037 Can be used for 24-hour circuits Fuse blocks with covers include 20 write-on circuit labels Tin-plated copper buses and fuse clips Accepts ring or spade type terminals Accepts ATO® and ATC® fast acting blade fuses Fuses sold separately WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Surface Mount 3 Circuit Fuse Block - Independent Source Surface mount fuse blocks accommodate three MRBF fuses for consolidated high amperage circuit protection The independent source fuse block (5194) is ideal for 3 output battery chargers The common source fuse block (5196) provides 3 loads from a single source Clip-on cover insulates terminal connections Versatile wiring options allow all wires to come out a single side Label recesses for easy circuit identification One-piece stainless flange nuts ensure safe and secure connections Specifications Ignition Protected: Yes Maximum Amperage: 240 per circuit Maximum Voltage: 58v DC Maximum Torque: 100 in-lb Terminal Stud Size: M8 (5/16"-18) WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Class T Fuse Block with Insulating Cover - 225 to 400A Allows the use of Class T fuses for fast acting circuit protection of inverters and other electronics Four stud design provides ample access around connecting stud to install large cable lugs without obstruction from the fuse Insulating cover satisfies ABYC/USCG insulation requirements Cover breakouts allow wire access in any direction Stud design ensures secure fuse mounting even with high heat Stainless steel studs provide resistance to corrosion and high torque One-piece stainless flange nuts ensure safe and secure connections UL 94-V0 base resists high heat Technical Specifications: Cable Size: Up to 4/0 AWG Ignition Protected: Yes Maximum Amperage: 320A Maximum Voltage: 160V DC Fuse Mounting Blocks: Tin-Plated Copper Terminal Stud Size: 5/16"-18 (M8) WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

5018 ST Glass Fuse Block without Negative Bus - 6 Circuit Features: Clear insulating cover with label recesses for accept Large Format Labels Cover insulates all conductive parts, satisfying ABYC/USCG requirements and storing spare fuses Tin-plated copper buses and Phosphor Bronze fuse clips give 30 Ampere rating per circuit Accepts AGC (Fast Acting), MDL (Time-Delay) and all other 3AG Glass Fuses WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

12 ATO Standard Series Fuse Block with Ground Bus 12 ATO ST Fuse Block provides a cost-effective, consolidated circuit protection solution. These products are designed to accept standard ATO fuses and ensure safe power distribution throughout an application. These products are RoHS compliant.  Features: Carded blister packaging for simple retail display Snap-on insulating cover (included) with label recesses & spare fuse holder Screw termination Integrated negative busbar Includes sheet of circuit identification labels Centralizes wiring to a convenient location The insulating cover provides circuitry protection Continuous current rating of 100A Current rating max per circuit: 30A Max Applications: Centralized distribution for accessory circuits Ideal solution for DIY projects *Fuses not included

RT Fuse Block 6 Position with Ground & LED Indication This 6-position fuse block has a modular design that can produce seven (7) unique configurations from Egis 8028 & 8030 and reduce part numbers to stock for all build requirements. Also, this fuse block has a ground and LED indication. Applications: Blown fuse LEDs speed up the correction of system faults and improve the ability to remotely diagnose customer issues. Harsh environment design with stainless steel self-locking hardware and optional weather-proof labels in standard or customized options. Features: Bullet-proof construction - designed with high-temperature materials and stainless steel self-locking hardware allows mounting anywhere on the vehicle Protects branch circuits by accepting ATO style fuses ranging from 1 through 40 Amps Supports SAE circuit protection standards for thermal/short circuit events Specifications: Maximum Current (Entire Block) Amps: 100 Maximum Current (Per Circuit) Amps: 30 Max Output Wire Size: #10 AWG Voltage Range VDC: 0-36 Number of Fuse Positions: 6 Compatible Fuse Types: ATO / ATC / ATF Focal Features: Spare Fuse Locations Two locations per 6 circuits for spare or test resistors to reduce siren volumes during evaluation. Stainless Steel Self-Locking Hardware 100 % non-ferrous corrosion-resistant materials. All attachment screws and nuts are self-locking. LED Fuse Diagnostics Blown fuse LED indication for each output circuit provides a clear indication of faulty circuits and eases troubleshooting issues remotely. Cover/ Label Recesses Protects terminal studs and cable terminal edges from inadvertent shorts to each other or ground. Ground Block Included Includes a 12-position ground return block with multi-level low amp terminal screws for improved mounting. Ground Block Separates The ground block section optionally separates from the fuse block section, affording increased deployment options for challenging installations.

RT Fuse Block 6 Position with LED Indication This 6-position fuse block has a modular design that can produce seven (7) unique configurations from Egis 8028 & 8030 and reduce part numbers to stock for all build requirements. Also, this fuse block has an LED indication. Applications: Blown fuse LEDs speed up the correction of system faults and improve the ability to remotely diagnose customer issues. Harsh environment design with stainless steel self-locking hardware and optional weather-proof labels in standard or customized options. Features: Bullet-proof construction - designed with high-temperature materials and stainless steel self-locking hardware allows mounting anywhere on the vehicle Protects branch circuits by accepting ATO style fuses ranging from 1 through 40 Amps Supports SAE circuit protection standards for thermal/short circuit events Specifications: Maximum Current (Entire Block) Amps: 10 Maximum Current (Per Circuit) Amps: 30 Max Output Wire Size: #10 AWG Voltage Range VDC: 0-36 Number of Fuse Positions: 6 Compatible Fuse Types: ATO / ATC / ATF Focal Features: Spare Fuse Locations Two locations per 6 circuits for spare or test resistors to reduce siren volumes during evaluation. Stainless Steel Self-Locking Hardware 100 % non-ferrous corrosion-resistant materials. All attachment screws and nuts are self-locking. LED Fuse Diagnostics Blown fuse LED indication for each output circuit provides a clear indication of faulty circuits and eases troubleshooting issues remotely. Cover/ Label Recesses Protects terminal studs and cable terminal edges from inadvertent shorts to each other or ground.