goodbest Complete Engine Rebuild Gasket Set for John Deere FD620/FD661 & Suzuki QUV620 — Full Head, Valve Cover, Crank Seals

Goodbest Complete Engine Rebuild Gasket Set is a full replacement gasket kit designed to restore sealing across valve covers, head, crankcase, and ancillary covers for John Deere FD620/FD661 V-twin engines and compatible Suzuki QUV620 UTVs.

When you are rebuilding or repairing a small V-twin gasoline engine, the right gasket set prevents oil leaks, preserves compression, and saves time by providing every sealing surface in one kit. This Goodbest kit replaces common OEM part numbers such as 11004-2107, 11060-2449, 11061-2182 and fits a range of John Deere mowers, garden tractors and Kawasaki-derived FD620/FD661 engines, plus Suzuki UTV QUV620 applications. Each set is packaged to include head gaskets, valve cover gaskets, crank seals and miscellaneous O-rings so you can complete an engine service without sourcing multiple parts.

What specific engines and machines will this gasket set fit?

This kit is engineered for John Deere models powered by FD620 and FD661 V-twin gasoline engines (including FD620D and FD661D variants) and for Suzuki UTV QUV620 applications that use the same engine family. It also suits several John Deere garden tractors and mowers where those engine codes apply.

• Compatible engine codes: FD620, FD620D, FD661, FD661D
• John Deere models: 425, 445, GX345, Front Mower F911, and 6x4 Gator variants
• Direct replacement for OEM numbers listed in compatibility
• Also fits Suzuki UTV QUV620 that shares the engine architecture

Which parts are included and which OEM numbers does it replace?

The Goodbest kit gathers every common gasket and seal needed for a complete engine rebuild so you won't be hunting down individual pieces. It is offered as a single comprehensive set that replaces several OEM part numbers to simplify maintenance and repairs.

• Includes head gaskets, valve cover gaskets, crankcase gaskets, O-rings and seals
• Replaces OEM numbers: 11004-2107, 11060-2449, 11061-2182, MIA10941, 92141-2122, 92049-2112, 59051-2112
• Packaged as: 1 complete gasket kit per order
• Meant for full teardown or targeted repairs where multiple gaskets are required

How does using a full gasket kit help my rebuild or service?

Using a single, complete gasket set reduces assembly errors and ensures consistent sealing across mating surfaces, which lowers the risk of oil leaks and loss of compression after reassembly. It also saves time and avoids downtime from sourcing missing pieces, especially during seasonal maintenance.

• Prevents oil and coolant leaks by replacing worn seals
• Ensures correct compression with fresh head and cylinder seals
• Simplifies inventory—one kit covers all common sealing needs
• Speeds up service by providing matched components in one package

What should I check before ordering this gasket set?

Confirm your engine model code and compare OEM numbers to avoid mismatches. Measure or visually inspect critical parts like the cylinder head and crankcase to ensure no warping or damage that would require additional machining beyond gaskets.

• Verify engine code: FD620 / FD661 (include D suffix if present)
• Match OEM part numbers listed to your service manual or existing gaskets
• Inspect mating surfaces for damage—gaskets won't fix warped components
• Plan for additional hardware like head bolts if your rebuild calls for replacements

Who this kit is for: The Goodbest Complete Engine Rebuild Gasket Set is aimed at home mechanics, small-engine shops, and fleet-maintenance teams working on John Deere mowers, garden tractors and Kawasaki-derived V-twin engines (FD620/FD661), plus owners of Suzuki QUV620 UTVs that share the platform. If you're performing a full tear-down, replacing multiple seals during routine overhaul, or want a convenient OEM-replacement bundle to keep on hand for seasonal service, this kit provides the matched gaskets and seals to complete the job efficiently.

• Features: Replaces # 11004-2107 11060-2449 11061-2182 MIA10941 92141-2122 92049-2112 59051-2112
• Fits: all John Deere mowers / small tractors with gasoline FD620 FD620D FD661 FD661D V-Twin engine
• Compatible models: John Deere Garden Tractors 425, 445, Front Mower F911, 6x4 Gator, GX345
• Also compatible: Suzuki UTV QUV620
• Package: 1 complete gasket kit per order