Keycci Replacement Fuel Tank for 4–6.75 HP Small Engines — Model 699374, Leak-Resistant Molded Construction

The Keycci 699374 replacement fuel tank is a direct-fit fuel reservoir for small 4–6.75 HP gasoline engines and 1133-0 portable generators, engineered to stop leaks and restore reliable fuel delivery.

This replacement tank is built to work with a wide range of small engine models (including 129H00 and 12A600 series) and replaces several common part numbers like 494213, 495224, 499618 and 693377. It’s molded from durable materials and designed to resolve common fuel-tank failures such as cracks, seepage and poor seals. Use it to return a lawn mower, generator or other small-engine equipment to dependable operation.

Which engines and machines will this Keycci fuel tank fit?

The 699374 tank was engineered for compatibility across multiple 4HP to 6.75HP small gasoline engine families and the 1133-0 portable generator. Check your engine’s model series and part number list to confirm fitment before ordering.

• Compatible series: 129H00 (0005–0185), 12A600, 12B600, 12C600, 12D600 and 12A800/12B800/12C800/12D800 ranges.
• Works with 1133-0 portable generator models.
• Replaces OEM part numbers: 699374, 494213, 499618, 495224, 693377.
• Intended for 4–6.75 HP engines—verify your engine plate for exact match.

How does this replacement tank prevent leaks and cracking?

Keycci uses reinforced materials and controlled molding to reduce stress points that cause cracking. The tank’s finish and integrated mounting surfaces are designed to maintain a secure seal with gaskets and hardware, minimizing fuel seepage under normal operating conditions.

• High-grade molded construction resists impact and vibration fatigue.
• Precision mounting surfaces for tight, consistent gasket compression.
• Designed to replace known weak OEM tanks prone to cracks.
• Prepares engines for sustained use without fuel loss or drips.

What installation steps and parts should I expect?

Installation is straightforward if you have basic hand tools and follow safety steps (drain old fuel, work in a ventilated area). The tank comes as the replacement shell; you may reuse existing cap, petcock, or mounting bolts if they are undamaged—or swap them with new parts as needed for a proper seal.

• Drain fuel and disconnect battery or ignition before starting.
• Remove old tank, noting hose routing and mounting locations.
• Transfer or replace cap, fuel valve (petcock) and mounting hardware as needed.
• Securely torque fasteners and check for leaks before use.

What durability and after-sales support can I expect?

Keycci emphasizes long-term performance by using robust materials and manufacturing controls to deliver a tank built for everyday outdoor equipment. The seller offers after-sales support to help with fitment questions, warranty concerns and replacement guidance.

• Manufactured for strength and resistance to environmental stressors.
• Designed for common maintenance cycles and replacement intervals.
• Customer support available for fitment and post-sale assistance.
• Replace OEM part numbers without sourcing multiple legacy components.

Who is this for: the Keycci 699374 fuel tank is aimed at homeowners, landscapers and field technicians who maintain small engines—mowers, portable generators and compact equipment—who need a reliable, direct-replacement tank that fixes leaks and cracking without the wait for rare OEM parts. If your engine’s model series or part number matches the compatibility list and you want a durable, serviceable fuel tank, this replacement is a practical, cost-effective option.