Timing Chain Gasket – Fits Suzuki DF200/225/250/300 (Replaces 12778-93J00)
Timing Chain Gasket – Fits Suzuki DF200/225/250/300 (Replaces 12778-93J00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Timing Chain Gasket – Fits Suzuki DF200/225/250/300 (Replaces 12778...
Product Details
This high-quality Timing Chain Gasket provides a reliable seal for the timing chain guide base on a range of Suzuki V6 4-stroke outboard engines. It is specifically designed for Suzuki DF200, DF225, and DF250 models from 2004 and newer, as well as DF300T/Z (2007–2011) and DF300AP (2012 and newer) engines.
This part serves as a direct replacement for Suzuki OEM part number 12778-93J00 and is an interchange for Johnson/Evinrude part 5034916.
- Installs between the timing chain guide base and the engine block.
- Designed for use with gasoline-powered marine engines.
- Provides a precise, factory-fit seal to prevent oil leaks.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Suzuki | 12778-93J00 |
| Johnson/Evinrude | 5034916 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Suzuki engines, this part fits a wide range of V6 4-stroke models. Please verify your specific model and year.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Suzuki | DF200 | 200 | 4-Stroke | 2004+ | 12778-93J00 | |
| Suzuki | DF225 | 225 | 4-Stroke | 2004+ | 12778-93J00 | |
| Suzuki | DF250 | 250 | 4-Stroke | 2004+ | 12778-93J00 | |
| Suzuki | DF250Z | 250 | 4-Stroke | 2004+ | 12778-93J00 | E03 Model |
| Suzuki | DF300AP | 300 | 4-Stroke | 2012+ | 12778-93J00 | |
| Suzuki | DF300T/Z | 300 | 4-Stroke | 2007–2011 | 12778-93J00 | |
| Suzuki | DF 250SSTL2 | 250 | 4-Stroke | 2020 | 12778-93J00 | VIN# 25003F-040001 to 25003F-04XXXX |
| Johnson/Evinrude | 5034916 | Cross-reference to Suzuki 12778-93J00 |
Technical Specs
- Product Type
- Timing Chain Guide Base Gasket
- Installation
- Engine Block
- Fuel Type
- Gasoline
- Dimensions
- 21.5 × 18.2 × 0.4 in (546.1 × 462.3 × 10.2 mm)
- Weight
- 1.5 lbs (0.68 kg)
- Other Technical Attributes
- OEM replacement part for the gasket between the timing chain guide base and engine block
What’s in the Box
- 1 x Gasket, Timing Chain (12778-93J00)
Installation Notes
- Disconnect the vehicle's battery and ensure the engine is cool.
- Drain the engine oil and coolant to prevent spills.
- Remove any components obstructing access to the timing chain cover, such as belts and pulleys.
- Carefully remove the timing chain cover bolts and detach the cover.
- Remove the old timing chain guide base gasket. Thoroughly clean both the engine block and cover surfaces, ensuring they are free of old gasket material, oil, and debris.
- Position the new gasket correctly on the engine block.
- Reinstall the timing chain cover, tightening bolts to the manufacturer's specified torque sequence and values.
- Reassemble all other components in the reverse order of removal.
- Refill the engine with the correct type and amount of oil and coolant.
- Reconnect the battery, start the engine, and carefully inspect for any leaks around the timing chain cover.
Troubleshooting & FAQ
What are the signs of a failing timing chain gasket?
Common signs include oil or coolant leaks from the front of the engine near the timing chain cover, engine overheating, or a rattling noise that could indicate related chain issues. A visual inspection for seepage is the most direct diagnostic method.
Does this gasket fit all Suzuki V6 4-stroke engines?
No. It is specifically designed for models listed in the compatibility chart, such as the DF200/225/250 series from 2004+ and certain DF300 models. Always verify your exact engine model and year before ordering to ensure correct fitment.
Do I need to use sealant with this gasket?
It is generally recommended to install these gaskets on clean, dry, and flat surfaces without sealant. However, always consult your engine's official service manual for the most accurate procedures, as a thin application of sealant may be advised in specific locations.
How is this aftermarket part different from an OEM one?
This is an aftermarket gasket engineered to meet or exceed OEM specifications for fit, material quality, and performance. The main differences are the manufacturer and a more competitive price point.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 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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