When you're on the water, the angle of your boat can make or break the ride. If you're running a Volvo Penta D4, D6, or D8 engine, you might be wondering how to get precise trim control without leaving the helm. The Volvo Penta 21936288 boat trim system is one answer, and this guide walks you through what it offers.
Quick verdict
The Volvo Penta 21936288 is a boat trim system built for Volvo Penta D4, D6, and D8 marine propulsion engines. It provides four push buttons for bow up, bow down, list port, and list starboard adjustments. The trim indicators display the position of the port and starboard interceptor units. At USD 1,799.00, it's a significant investment, but for boaters who want factory-matched trim control, it's a compelling option.
Volvo Penta 21936288 Boat Trim System Trimming Raft Marine Propulsion D4 D6 D8

The product is a complete trim system from Volvo Penta, part number 21936288. It features a control interface with four push buttons and trim indicators for the port and starboard interceptor units. It's new, comes with a 2-year warranty, and has a country of origin of Sweden. The main reason to consider it is the dedicated control interface for fine-tuned trim. The main limitation is that it's designed for specific Volvo Penta engine families, so it's not a universal fit.
Who it suits
This system is for boat owners who want discrete push-button trim control on a Volvo Penta-powered boat. If you often correct for listing or want to fine-tune your bow attitude on the fly, the control layout covers both fore-aft and side-to-side adjustments. It's also a good choice if you prefer a component matched to the Volvo Penta engine family.
What stands out from the listed details
The trim indicators are a standout feature. They give you a comprehensive view of the interceptor unit positions on both sides, helping you make small, deliberate corrections. The system is new, with a 2-year warranty and a country of origin of Sweden.
Meaningful trade-offs
The price is the main hurdle. At USD 1,799.00, this trim system is a significant line item in any boating budget. There's also no indication of what hardware or installation kit comes with it, so you may need to factor in additional costs for fitting. Compatibility is another consideration. The system is identified for specific Volvo Penta engine families, so confirm your engine before committing.
Bottom line
If you're looking for a purpose-built trim system from Volvo Penta, the 21936288 offers a complete package with interceptor-based control. The push-button interface and indicator display give you a clear picture of your boat's attitude. Just weigh the investment against how often you'll use the trim control. If it matches your Volvo Penta engine, it's a strong candidate.