Caltric Ignition Coils for John Deere 320/345/425 — 2-Pack Copper-Wound Direct-Fit Replacements

Caltric ignition coils compatible with John Deere model engines provide a direct-fit replacement (2-pack) for AM120732-series applications, restoring reliable spark delivery for lawn tractors, greensmowers and utility vehicles.

These replacement ignition coils are built with copper-wound windings and designed to match OEM electrical characteristics for select John Deere engines. Supplied as a two-piece set, the coils reference OEM numbers AM120732, AM105571 and AM118703 and are intended for a wide range of lawn & garden equipment. Before ordering, confirm compatibility with your engine by checking part numbers and the fitment notes below.

Will these coils fit my John Deere 320, 345 or 425 tractor?

Yes — when your engine requires one of the listed OEM numbers, these coils are manufactured to the same fit dimensions and terminal layout as the originals. They are suitable for many lawn and garden tractors from John Deere, including earlier GX-series and select LX models.

• Compatible OEM references: AM120732, AM105571, AM118703
• Common tractor models: 320, 345, 425 and GX345
• Check engine housing and mounting holes to confirm match
• Includes two coils for dual-coil engine setups or a spare

How do these coils improve engine starting and idle behavior?

These coils deliver a consistent high-voltage pulse to the spark plug, helping the combustion cycle ignite reliably. Replacing a worn or cracked coil can reduce misfires and improve cold starts, provided the rest of the ignition system (plug, wires, points) is in good condition.

• Copper-wound construction for stable conductivity
• Designed to match OEM voltage and timing characteristics
• Sold in a two-pack to service both cylinders or keep a replacement
• Works best when installed with a fresh spark plug and proper gap

What does the package include and what should I verify before installation?

The shipment contains two replacement ignition coils plus the standard mounting and terminal arrangements needed to install them. Before fitting, inspect your engine’s mounting pattern, electrical connector type, and OEM part number to ensure the coil will seat and wire correctly.

• Order includes: 2x ignition coil (no extra hardware unless shown)
• Material: copper wire windings for consistent current delivery
• Verify fit: compare with old coil’s mounting holes and terminal layout
• Confirm engine compatibility with listed John Deere models

Are these coils compatible with other John Deere machines like Gators or greensmowers?

Many users find these coils suitable for a variety of John Deere equipment beyond tractors, including certain greensmowers and Gator utility vehicles—again, only when the OEM part number aligns. Cross-check the model and engine part references to avoid mismatches.

• Listed compatible equipment: Greensmowers 2500 series, Gator XUV620i/XUV625i
• Also fits select LX series lawn tractors and other small engines using the same OEM numbers
• Not universal — always confirm using engine part label or manual
• Helpful for fleet maintenance where the same coil serves multiple machines

Who is this for: These Caltric replacement ignition coils are aimed at homeowners, landscapers and small-fleet technicians who maintain John Deere lawn tractors, greensmowers and utility vehicles that specify AM120732/AM105571/AM118703. If you need a direct-fit, copper-wound coil set sold as a two-pack to restore reliable spark on compatible engines, this part offers a cost-effective service option. If you are unsure about fitment, have your existing coil’s part number or a clear photo of the mounting and connector ready to compare before purchase.