Buying a 4hp long shaft outboard drive shaft requires matching part numbers, shaft length, and engine type. This guide highlights five compatible options that suit common Yamaha and generic long-shaft configurations. It’s ideal for boaters seeking straightforward replacements or upgrades without extensive modification. Each product is selected for clarity of compatibility, durability, and ease of installation for practical boat use.
Summary of recommended options (quick reference):
| Product | Best for | Key benefit | Notable limitation |
|---|---|---|---|
| 6E0-45511 Drive Shaft Long (Yamaha 4HP/5HP) | Yamaha 4HP/5HP long shaft users | Direct OEM-number-aligned replacement with clear part references | Check OEM compatibility before purchase |
| Lower Unit Long Shaft 6E0-45300-03-4D (Yamaha 4HP/5HP) | Gearbox replacements in long shaft setups | Direct fit for long shaft transmissions | Ensure model compatibility prior to ordering |
| OVERSEE 6E0-45300-13-4D Long Shaft | Vintage to mid-range Yamaha 4HP/5HP | Broad compatibility across several 4/5 HP models | Verify model year range for best fit |
| Outboard 69P-45300-11-4D Long Shaft | Long shaft Yamaha engines and similar gearboxes | Durable construction for practical use | Brand availability may vary by seller |
| EtXFH 6E0-45511-11 Drive Shaft Long | 4HP/5HP 2-stroke/4-stroke platforms | Clear applicability to multiple stroke configurations | Confirm exact OEM number if possible |
6E0-45511 Drive Shaft Long for Yamaha Outboard Engine F 4HP 5HP
Best for Yamaha 4HP and 5HP two- and four-stroke engines, this long drive shaft (lower casing drive 1) matches OEM part numbers 6E0-45501-10-00 and 6E0-45501-11-00. It is a straightforward replacement option for owners who want a direct part-number match. Caution: verify the OEM number on your engine nameplate before purchase.
Lower Unit Long Shaft 6E0-45300-03-4D for Yamaha 5HP/4HP
Selected for its practical durability and easy installation, this long-shaft lower unit assembly fits multiple 5HP and 4HP Yamaha outboards. It emphasizes practicality and long service life. Best for boaters seeking a durable, readily available replacement. Limitation: confirm that the gearcase designation is GEARBO and that you have the correct long-shaft variant.
Transmission Lower Unit Assembly Long for 5HP/4HP Gearbox
Designed for long-shaft configurations, this transmission lower unit assembly matches 5HP and 4HP engines with GEARBO gearboxes. It is a direct replacement that supports straightforward swap-out with compatible models. Best for owners replacing the entire lower unit, not just the shaft. Caution: ensure the model matches 6E0-45300 and the long-shaft designation.
OVERSEE 6E0-45300-13-4D Long Shaft for Yamaha
Best for classic and mid-range Yamaha 4HP/5HP models, this long-shaft lower unit assembly covers a wide 1977–2013 range. It supports a broad spectrum of 2-stroke models. Limitation: verify the exact year and model compatibility to ensure a precise fit with your engine family.
Outboard Motor 69P-45300 Long Shaft Assembly
Best for Yamaha 2T 25HP/30HP engines in long-shaft configurations, this lower unit assembly emphasizes high-quality construction for practical use. It is suitable for users replacing older long-shaft gearboxes. Caution: brand availability may vary by seller, so confirm stock before ordering.
EtXFH 6E0-45511-11 Drive Shaft Long
Best for 4HP/5HP engines across 2- and 4-stroke configurations, this drive shaft supports power transmission to the lower unit in multiple stroke setups. It helps ensure compatibility with a range of Yamaha and generic long-shaft motors. Caution: always verify the exact OEM part number 6E0-45511-11 for your engine to avoid mismatches.
TZRcv6GXw 6E0-45300 Long Shaft Assembly
Best for Outboard 5HP/4HP with long-shaft design, this assembly supports a direct replacement path for the 6E0-45300-03-4D. It is suited for users who want a straightforward swap with known compatibility. Challenge: confirm the exact model year compatibility if working with older gearboxes.
JITUIHOM Compatible Long Shaft Lower Unit
Best for 4HP and 5HP long-shaft engines, this gearbox-focused option is designed to support smooth and reliable operation. It emphasizes compatibility with long shaft configurations and practical installation. Choose this if your engine is in the 4- to 5-horsepower range and you need a straightforward gearbox fit. Avoid this if your engine uses a short shaft or non-GEARBO designation.
Buying Guide: How to Choose the Right Long Shaft Drive Shaft
- What is my engine model and OEM part number? Verify exact numbers on the engine nameplate to avoid mismatches.
- Is my shaft configuration long or short? Confirm the shaft length and gearcase designation (such as LONG or GEARBO) before buying.
- Do I need a full lower unit assembly or just the drive shaft? Decide whether a replacement of the entire lower unit is preferable to a shaft-only swap.
- What is the engine’s stroke type (2-stroke vs 4-stroke)? Some shafts are listed for both, but compatibility can vary by model year and configuration.
- How available is the exact part for your model year? Some listings reflect older or less common variants; ensure stock and compatibility.
- What is my installation capability? Consider whether you have the tools and mechanical know-how to perform a lower unit swap safely.
Frequently Asked Questions
What is the main purpose of a long shaft drive shaft?
It transmits power from the engine to the lower gearbox while accommodating longer shaft configurations needed for certain hulls and mounting heights.
How do I verify a part number matches my engine?
Check the engine’s nameplate or serial number and cross-reference with OEM part numbers listed by the manufacturer.
Can I replace just the drive shaft or do I need a full lower unit?
If only the shaft is damaged, a shaft replacement may suffice. For worn gears, seals, or bearings, a full lower unit replacement is often preferable.
Are all 6E0-45300 parts interchangeable across brands?
Interchangeability depends on the gearbox design and shaft length. Confirm the exact model and designation (LONG, GEARBO) with the seller.
What should I avoid when ordering a long shaft part?
Avoid ordering based on appearance alone. Do not assume compatibility without checking OEM numbers, shaft length, and gearcase designation.