Suzuki Gear Oil Drain Plug Gasket – Fits Suzuki DF25/30A Outboards (Replaces 59178-97J00)
Suzuki Gear Oil Drain Plug Gasket – Fits Suzuki DF25/30A Outboards (Replaces 59178-97J00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Free standard shipping on all orders under 1 KG
Suzuki Gear Oil Drain Plug Gasket – Fits Suzuki DF25/30A Outboards ...
Product Details
This is a high-quality aftermarket Suzuki Gear Oil Drain Plug Gasket – Fits Suzuki DF25/30A Outboards (Replaces 59178-97J00). It is designed for Suzuki DF25/30A outboard motors from 2015 to the current model year, ensuring a proper seal for the lower unit gear case during oil changes.
This part is a direct replacement for Suzuki OEM part number 59178-97J00.
- Installs on the lower unit for both the gear oil drain and fill plugs.
- Suzuki recommends replacing the gasket with every gear oil change to prevent leaks.
- Engineered to ensure proper sealing of the gear case.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Suzuki | 59178-97J00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Suzuki engines, this gasket is a confirmed fit for DF25/30A models and may fit others as listed.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Suzuki | DF25/30A | 25/30 | 4-Stroke | 2015–current | 59178-97J00 | For both gear oil drain and fill plugs |
| Suzuki | DF200 | 200 | 4-Stroke | 59178-97J00 | Listed as compatible in some sources |
Technical Specs
- Product Type
- Gear Oil Drain Plug Gasket
- Installation
- Lower Unit / Gear Case
- Dimensions
- 10.0 × 10.0 × 0.2 in (254 × 254 × 5.08 mm)
- Weight
- 0.1 lbs (0.045 kg)
- OEM Part Number
- 59178-97J00
- Warranty
- Manufacturer standard
What’s in the Box
- 1 x Gear Oil Drain Plug Gasket (59178-97J00)
Installation Notes
Suzuki recommends replacing these gaskets with every gear oil change to ensure proper sealing of the lower unit. This gasket is used for both the drain and fill plugs on the gear case. Always tighten plugs to the manufacturer's specified torque.
Troubleshooting & FAQ
How often should I replace this gasket?
It is best practice to replace the gear oil drain plug gasket with every gear oil change. This ensures a fresh, reliable seal and prevents potential leaks from a compressed or damaged old gasket.
Does this gasket fit both the drain and fill plugs?
Yes, on compatible models like the Suzuki DF25/30A, this single gasket part number is used for both the lower gear oil drain plug and the upper gear oil fill plug.
What are the signs of a failing drain plug gasket?
Signs of a failing gasket include visible oil drips from the drain plug area, a rainbow-like sheen on the water surface below the lower unit, or a consistently low gear oil level. If you notice any of these, inspect the gasket and plug immediately.
Is this part compatible with the Suzuki DF200?
Some sources list this gasket as compatible with the DF200. However, this has not been universally verified. We recommend checking your engine's service manual or original part to confirm the part number before ordering for a DF200.
What happens if I reuse the old gasket?
Reusing an old gasket increases the risk of an improper seal. Gaskets compress during installation (crush washers) and may not provide adequate sealing pressure a second time, leading to slow leaks and potential water intrusion into the gear case.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9001 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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