Finding the right tilt and trim kit is essential for smooth boat handling and engine efficiency. This guide highlights five reliable options suitable for common Yamaha, Showa, and other marine power units, plus Johnson/Evinrude systems. Each choice targets specific buyer needs—whether you operate a small fishing boat, a mid-size runabout, or a larger Yamaha-powered craft. The selections emphasize durability, compatibility, and ease of maintenance to help buyers pick confidently.
| Product | Best For |
|---|---|
| Tilt Trim Seal Kit (Camoo Store) | Yamaha and Showa units; saltwater environments |
| T-H Marine PT-35 Tilt and Trim | Small motors up to 35 HP; beginner or light-use boats |
| Bob’s Machine Action Series Tilt and Trim | All-in-one unit; 40 HP max |
| Kit King Yamaha Showa Seal Kit | 1997+ Fast Strike models; Yamahapower trims |
| 434519 O-Ring & Seal Rebuild Kit | Johnson Evinrude OMC tilt/trim units (1991-2006) |
Tilt Trim Seal Kit for Yamaha Showa (Camoo Store)

This kit is designed for numerous Yamaha Showa tilt/trim assemblies, covering models such as 60X-, 63P-, 64E-, and more. It emphasizes Viton seals, which resist salt water and wear, aiming for long life with marine exposure. Best for anglers or boaters who rely on Yamaha trim units in salt or mixed-water environments. One potential limitation is that precise fit requires verification against your exact model code.
Who it’s best for: boat owners with Yamaha/Showa trim units seeking durable, salt-tolerant seals. Why selected: broad compatibility and Viton material offer improved longevity. Caution: verify exact model number because listed compatibility spans many variants.
T-H Marine PT-35 Tilt and Trim

Rated for up to 35 HP, with a setback of 5.5 inches, this tilt and trim unit is positioned to improve boat stability and performance. It offers up to 84 degrees of trim and tilt to maximize lift and control at various speeds. Best for lightweight boats or first-time installers who want straightforward, reliable adjustment. Limitation: not suitable for larger engines beyond 35 HP.
Who it’s best for: owners of small craft needing a compact, easy-to-install trim solution. Why selected: specifically designed for smaller motors with solid range of tilt/trim angles. Caution: verify motor horsepower compatibility before purchase.
Bob’s Machine Action Series Tilt and Trim

This is an all-in-one tilt/trim solution, including a relay assembly, wiring harness, and switch, with a maximum capacity of 40 HP. Ideal for DIY installers who want an integrated setup with everything in one package. Better for builders seeking fewer separate parts. Caution: not suitable for engines beyond 40 HP.
Who it’s best for: hobbyists or small boat operators who prefer an installed kit with components included. Why selected: convenience and compatibility as a single unit. Limitation: HP ceiling may restrict use on higher-power motors.
Kit King Yamaha Showa Seal Kit

Seal kit designed for 1997 and newer Fast Strike Trim Tilt units, covering 115HP to 250HP Yamaha configurations with 20″ shafts. Includes seals across all three cylinders and more. Best for owners retrofitting or rebuilding Yamaha/Showa trims. Caution: ensure your shaft length and cylinder count align with kit specifications.
Who it’s best for: Yamaha-powered boats with a Showa tilt/trim system needing a comprehensive seal rebuild. Why selected: broad engine range coverage within a single kit. Limitation: may require precision in cylinder matching for exact fit.
434519 Trim & Tilt O-Ring & Seal Rebuild Kit

Designed for Johnson/Evinrude Fastrack tilt and trim units from 1991-2006, this rebuild kit focuses on O-rings and seals to stop trim leakage. Best for Johnson/Evinrude owners seeking a cost-effective rebuild option. Caution: verify compatibility with Fastrack models as listed, since other systems may require different kits.
Who it’s best for: Johnson/Evinrude Fastrack users needing a direct, leak-preventing rebuild. Why selected: targeted to a well-defined engine family; helps restore trim function with replacement seals. Limitation: limited to Fastrack systems; not a universal kit.
Buying Guide
Key considerations for choosing a tilt and trim kit include engine compatibility, seal material, and installation complexity. Material matters: Viton seals offer better chemical resistance and longevity in saltwater environments. Confirm that the kit covers all cylinders and shaft length for your specific motor. For DIY installers, consider whether a kit with included wiring and switches reduces setup time. If you operate a small boat, a compact unit with easy maintenance may be preferable; for larger Yamaha builds, a comprehensive seal kit or an all-in-one unit can save future servicing.
Questions to guide your choice:
- What is the horsepower rating of my motor, and does the kit specify a compatible range?
- Is the kit designed for Yamaha/Showa, Johnson/Evinrude, or other brands?
- Do I need an all-in-one assembly or a standalone seal kit?
- Will the seals withstand saltwater exposure in my boating environment?
- Are shaft length and cylinder count matched by the kit specifications?
FAQ
- What is a tilt and trim kit used for?
Answer: It provides seals and sometimes assemblies to restore or improve engine tilt/trim function, improving boat handling and motor efficiency. - How do I know which kit fits my engine?
Answer: Check model numbers, horsepower rating, and shaft length against the kit’s compatibility list. - Are Viton seals better than generic rubber?
Answer: Yes, Viton offers higher chemical resistance and longer life in saltwater environments. - Should I buy an all-in-one unit or separate seals?
Answer: All-in-one units are convenient for installation, while seal kits suit older or specific model rebuilds. - Can I install a tilt/trim kit myself?
Answer: Basic mechanical kits can be installed by capable DIYers, but some units may require professional service for proper alignment. - What maintenance helps extend kit life?
Answer: Regular inspection for leaks, cleaning of marine buildup, and timely replacement of worn seals.