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.

Replaces Southco style unit. Includes back-up washer and nut. Popular replacement for Wellcraft, S2, Four Winns and Regal and many others. 2 keys and hardware.

Mixed Combination Pin-LockT Security Knob and Key Knob for 1.5" Diameter C Size Arms The RAP-S-KNOB5U consists of a 5/16"-18 female threaded security knob and key knob. The RAP-S-KNOB5U replaces all knobs on 1.5" diameter C size arms and mounts. The RAP-S-KNOB5U offers the ideal amount of leverage to properly tighten your mount to prevent slippage in heavy chop or in extreme vibration environments. With an emphasis on aesthetics and function, the RAP-S-KNOB5U is low in profile and only adds a small amount of additional bulk to your system when compared to the standard knob included. At a fraction of the cost of currently available keyed locking knobs, the additional peace of mind and tamper resistance comes at a very affordable price. The RAP-S-KNOB5U is the perfect accessory for keeping your mounted electronic device safe from theft and tampering. Material: High Strength Composite Note: The "U" in the part number reflects product packaged in poly bag. Mount not included with purchase.

Mixed Combination Pin-Lock Security Knob and Key Knob for 1" Diameter B Size Arms The RAP-S-KNOB3U consists of a 1/4"-20 female threaded security knob and key knob. The RAP-S-KNOB3U replaces all knobs on 1" diameter B size arms and mounts. The RAP-S-KNOB3U offers the ideal amount of leverage to properly tighten your mount to prevent slippage in heavy chop or in extreme vibration environments. With an emphasis on aesthetics and function, the RAP-S-KNOB3U is low in profile and only adds a small amount of additional bulk to your system when compared to the standard knob included. At a fraction of the cost of currently available keyed locking knobs, the additional peace of mind and tamper resistance comes at a very affordable price. The RAP-S-KNOB3U is the perfect accessory for keeping your mounted electronic device safe from theft and tampering. Material: High Strength Composite Note: The "U" in the part number reflects product packaged in poly bag. Mount not included with purchase.

Ram Mixed Combination Pin-Lock™ Security Knob, Stud and Key Knob f/ Gimbal Brackets The RAM® Gimbal Security Knob is a great solution for securing your gimbal mounted electronics, whether or not it's mounted on a RAM®. The universal design utilizes various stud sizes to accommodate most popular GPS, chart plotter, fish finder and VHF radio brands. With a simplistic design, our security knob is extremely affordable and simple to install. Pair this with a security knob for your RAM® mount and you can feel at ease when leaving your expensive electronics in public places without the concern of theft or tampering. ** Multiple key configurations for security purposes **

Cockpit Marine 52mm (2-1/16") Mechanical Water Pressure Gauge - Black Dial/Bezel VDO Cockpit Marine offers a comprehensive modular, modern series of instruments for engine monitoring. More functions and greater flexibility in installation and design increase the scope for high manufacturing standards and guarantee the highest level of reliability and readability.  As the result of ongoing research and development work, VDO Cockpit Marine gauges offer an innovative, comprehensive standard instrumentation platform.  VDO Cockpit Marine gauges provides maximum freedom to customize the cockpit and is the natural choice for an attractive price/performance ratio.  Features: 40 PSI Mechanical Pressure Gauge For outboard engines 12V Illumination bulb Connection: M4 Stud Mounting Hardware: Included Voltage: 12V *Sold as an Individual WARNING: This product can expose you to chemicals including LEAD 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.

HYDRO 10" 2-Way Marine Speakers with Bullet Tweeters & Integrated RGB LED Lights - Black DS18 continues to dominate the marine scene with our innovative brand of marine speakers, the NXL series. The NXL line of marine speakers is a true sight to see! They come in 2-way configurations and carry an IP65 waterproof rating, so you know they are durable for the elements. Each speaker comes in white or black to help you complete the accents on your vehicle. They come with their own integrated RGB lighting on the grill that shines down on the waterproof cones to complete your color scheme perfectly. These speakers produce a very full and rich sound that is very hard to replicate in open-air environments like out on the water, but DS18 does it flawlessly. With two options to choose from, (6.5", 8", and 10") you can make sure you get the complete sound you crave and have perfect acoustical music on your command. Features: DS18 Hydro is designed to withstand extreme elements and keep you playing. RGB LED design to brighten up your system through the night all while displaying whatever color you want with our (sold separately) LED BTC. Integrated tweeter along with mid-range woofer so you get an amazing range of frequencies and very high sound quality. Exclusive mesh grill design for perfect protection Technical Specifications: Nominal Diameter - 10.75" Nominal Impedance - 4 Ohms RMS Power Handling - 300W Max Power Handling - 600W Frequency Response - 55Hz - 22KHz Marine Grade Type - IP65 Grill Type - Injection Molded Composite ASA with UV Protection Coating  Measurements - 10.7" (Dia.) x 5.7" (D) Mounting Depth - 4.2" In the Box: 2 x 10" 2-Way Full Range Speaker For All Elements Marine (1 per box) 2 x 1.5M #18 Speaker Input Wired With Fast Terminal 2 x 1.5M #22 RGB Power Input Wired With Fast Terminal 12 x M4 Phillips inner Hex Head 304 Stainless Steel (4mm Hex Tool)

Non-Locking Flush/Knob Latch - Black Plastic Features: Push button opening Single hole installation Optional ejector spring helps prevent rattles Material: Plastic Color/Appearance: Black Access Restriction: No Restiction Grip Range: 22.300-23.100mm (0.88-0.91") Installation: Threaded body and nut Panel Thickness: 0.000-10.300mm (0.00-0.41in) Style: Pull Tab In Line With Latching Pawl

RAM Double Socket Arm w/ Pin-Lock™ Security Knob and Key Knob f/ 1.5" Ball Bases

MS-BB100 Marine Black Box AM/FM/BT - 2 Zone Introducing the MS-BB100, a compact black box entertainment solution that incorporates the marine industry supported Fusion-Link protocol and Fusion's proven marine engineering skillset to deliver a boat load of tunes.  An industry first, the BB100 includes an easy touch Bluetooth embedded IPx7 water resistant remote for quick audio adjustments.  Supplied with a 2m (6.6ft) connection cable, the wired remote is ideally shaped for hassle free installation onto a dash or boat console.  With the Bluetooth receiver embedded into the remote we can reduce the likelihood of interference occurring between your smartphone and the receiver.  Engineered for either a flush or flat mount installation, you can choose the finish to suit your vessel. NMEA 2000  Ready for connection and control from any supported Multi-Function Display - The MS-BB100 is a Fusion-Link Wired NMEA 2000 certified product and is compatible with a range of the world’s leading Multi-Function Displays for on-screen audio control. When pairing the MS-BB100 with a supported chartplotter or fish finder, you bring your music to the big screen, allowing you to keep an eye on the charts or the fish while skipping tracks or adjusting the volume at the same time. In addition to MFD control, the BB100 will connect to any Fusion NRX series remote control attached to the same powered NMEA 2000 network for localized control of the audio zones Fusion-Link™ makes control of your stereo easier than ever.  Quickly find your favorite song, tune in to the sports or turn up the volume all from your partnered multifunction display (MFD), compatible smartphone, Garmin Handheld or Garmin watch.  With the app installed, you can enjoy source navigation and track selection from wherever you are on your boat. Multi-Zone Control With two independent audio zones available, each with advanced localized menu controls, including zone naming, you can easily customize and control your listening experience in each zone. Features: Small footprint Black Box design with included Bluetooth embedded wired remote IPx7 water resistant wired remote with quick Bluetooth pairing Flush or flat mounting remote control installation options Fusion-Link NMEA 2000 Ready for connection and control from any supported Multi-Function Display Multi-Zone™ Technology – Two independent audio zones are available, each with advanced localized menu controls, including zone naming True-Marine™ Designed and Engineered – Extensively tested to perform in the harsh marine environment Technical Specifications: 2 Zones 200 Watts peak power NMEA 2000 compatible  Class AB Amplifier Rear USB connection Dimensions (W/H/D) - 6-1/8" x 2-3/8" x 3-11/16"  Remote Dimensions (Diameter/Depth) - 2-9/16 x 3/16"  In the Box: Media Black Box Remote - Wired Remote Mounting Hardware/Gasket Remote Mounting Template 6' NMEA 2000 Drop Cable Power Wiring Harness Aux/Line-out Harness Documentation *SiriusXM Promotion - Get 3 Free Months SiriusXM Streaming Service - LINK *Sold as an Individual WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Sticky Race Gloves - 3-Finger - Black - M Features: Synthetic leather for maximum durability, minimum stretch and shrinkage Double aramid stitched in high wear areas Double thickness palm and fingers for protection and grip Hook-and-loop wrist closure/adjustment Low cut wrist band for free movement and ClearStart™ watch visibility and operation Mesh panels for flexibility and comfort Mesh panels for flexibility, comfort and quick drying - now available in Grey Sticky gloves reduce fatigue by minimising the physical effort required to hold rope Applications: Used for hand protection and grip Materials: 'Amara’ synthetic leather Double Aramid stitching

Cockpit Marine 85mm (3-3/8") 60 MPH Pitot Speedometer - Black Dial/Bezel VDO Cockpit Marine offers a comprehensive modular, modern series of instruments for engine monitoring. More functions and greater flexibility in installation and design increase the scope for high manufacturing standards and guarantee the highest level of reliability and readability.  As the result of ongoing research and development work, VDO Cockpit Marine gauges offer an innovative, comprehensive standard instrumentation platform.  VDO Cockpit Marine gauges provides maximum freedom to customize the cockpit and is the natural choice for an attractive price/performance ratio.  Features: Works with all standard pitot style senders and 1/8"" tubing 12V Illumination bulb Connection: M4 Stud Mounting Hardware: Included Voltage: 12V Input Type: Mechanical *Sold as an Individual WARNING: This product can expose you to chemicals including LEAD 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.

Cockpit Marine 85mm (3-3/8") 35 MPH Pitot Speedometer - Black Dial/Bezel VDO Cockpit Marine offers a comprehensive modular, modern series of instruments for engine monitoring. More functions and greater flexibility in installation and design increase the scope for high manufacturing standards and guarantee the highest level of reliability and readability.  As the result of ongoing research and development work, VDO Cockpit Marine gauges offer an innovative, comprehensive standard instrumentation platform.  VDO Cockpit Marine gauges provides maximum freedom to customize the cockpit and is the natural choice for an attractive price/performance ratio.  Features: Works with all standard pitot style senders and 1/8"" tubing 12V Illumination bulb Connection: M4 Stud Mounting Hardware: Included Voltage: 12V Input Type: Mechanical *Sold as an Individual WARNING: This product can expose you to chemicals including LEAD 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.

Sierra replacement engine couplers for Mercruiser engines.

Power Wheel Black with Black Nut & Black Knob - 14.5" Edson's ComfortGrip Power Wheels feature an ergonomically-designed rubber finger grip insert that provides precise control and exceptional comfort. Features: 14.5" PowerWheel Color: Black Black Nut & Black Knob