As a spark plug manufacturer with decades of OEM experience, TAKUMI controls every step from electrode material selection to final 100% functional testing.
Product Overview
TAKUMI R6GC1-77 spark plug is a form, fit and function equivalent replacement for OEM part 146-2588. TAKUMI R6GC1-77 prechamber resistor spark plug for C-A-T G3500 series gas engines. Replaces 346-5123 family.
Every TAKUMI unit is produced in an ISO 9001 and IATF 16949 certified factory, 100% tested before shipment. The plug is engineered for long service life in continuous operation, with a nickel-plated shell, copper-core electrode and high-grade ceramic insulator.
Key Specifications
- TAKUMI TypeR6GC1-77
- Thread SizeM18 x 1.5
- Reach19 mm
- Hex Size20.6 mm
- Seat TypeFlat / Gasket
- Spark Gap0.3 mm
- Heat Range77
- Electrode TypePrechamber
- ResistorYes
Cross Reference
- C-A-T346-5123 / 284-8313 / 199-9012 / 146-2588 / 430-4521 / 301-6663 / 479-7702
Applications
- CAT G3508 / G3512 / G3516 / G3520 gas generator engines
- Natural gas, biogas, landfill gas
Advantages
- Drop-in replacement - no engine parameter changes required
- Reliable ignition under high pressure and lean combustion
- Anti-corrosion nickel-plated housing
- 95% alumina insulator for heat and shock resistance
- Monolithic resistor for stable conductivity
- Factory direct with competitive pricing and short lead time
OE numbers are for reference only. Final fitment should be confirmed before ordering.
Factory & Quality Control
In our quality laboratory, every production batch is inspected with precision gauges, high-voltage spark testers and sealing equipment before packing.
Production Workshop
TAKUMI runs a fully integrated manufacturing base: CNC machining, automated assembly and 100% functional testing under one roof.
From raw material to finished spark plug, every process is controlled in-house with ISO-certified procedures.
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TAKUMI R6GC1-77 Spark Plug Generator Spark Plug replace 146-2588 346-5123 430-4521 for G3516 G3512 Images
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