Volvo Penta SX-A Lower #3842603

Volvo Penta SX-A Lower Unit – OEM #3842603 | 1.51 & 1.79 Ratios | 18/26 Splines | Brand New OEM

We found a special buy on these SX-A OEM Lower Units and are passing on the savings to our customers. Once these units sell, the price will go up accordingly. Don’t delay – Buy today!

This Volvo Penta SX-A lower unit is a factory-direct, OEM gearcase engineered for perfect fit and longevity. Designed for SX-A outdrives with 18/26 spline count, this model supports both 1.51 and 1.79 gear ratios, making it a versatile option for various Volvo Penta outdrive applications.

Manufactured to original equipment standards, this is not an aftermarket reproduction—it is a genuine Volvo Penta SX-A lower unit that ensures optimal performance and reliability on the water.

This unit is in stock and ships today when ordered by 1 pm cst. Rush shipping is available when you call.

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View our parts finder to find Volvo-Penta parts to verify this is a match or contact us using the buttons at the bottom of the page.

You can also use our Volvo-Penta Boat Parts finder to find other parts for your engine.

Take the guess work out of ordering online. Get the right lower unit for your outboard when you call us today.

Features & Benefits:

• Fits: Volvo Penta SX-A Outdrives
• Gear Ratios Supported: 1.51 & 1.79
• Spline Count: 18/26
• OEM Part #: 3842603
• 100% OEM Volvo Penta Marine Part
• 1-Year Warranty included
• Engineered for high-performance SX-A outdrive systems
• Compatible with official Volvo Penta SX-A parts
• Great for replacing worn, damaged, or aging units
• Save $ with Remanufactured SX-A gearcases also available for cost savings

Pricing

Total Price: $ 5,995
Less $300 Core Rebate
Final Price: $5,695

Product Finish:

• Factory-sealed with OEM paint and corrosion-resistant coatings
• Tested for fresh and saltwater environments
• Built to exact Volvo Penta marine tolerances

Core Rebate Information

• Return your old core, get up to $300 back
• Rebate amount will vary based on the condition of your core
• ♻️ Recycle your core- keep boat parts out of the landfill

Useful Resources

• 🔍 How to find your Boat Engine serial number? 
• Still deciding? Watch our YouTube video How to avoid common lower unit replacement mistakes
• To help extend the life of your gearcase, check out our Boat Maintenance Checklist

🛥️ Please have your Engine Serial # ready when you contact us if possible. 🛥️