TAKUMI R6GC1-77M Spark Plug Replacement Generator Spark Plug MTU X52404500027 MTU X52404500039 MTU X52404 For MTU GAS En
Quality starts at the factory floor. TAKUMI's production facility combines automated assembly with skilled craftsmen, and every batch is documented and traceable.
Product Overview
TAKUMI R6GC1-77M spark plug is a form, fit and function equivalent replacement for OEM part X52404500027. TAKUMI R6GC1-77M industrial resistor spark plug for MTU 4000 gas engines. M18x1.5 thread, 0.3 mm gap, heat range 77.
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 TypeR6GC1-77M
- Thread SizeM18 x 1.5
- Reach20.6 mm (13/16")
- Hex Size22.2 mm (7/8")
- Seat TypeFlat
- Spark Gap0.3 mm
- Heat Range77
- Electrode TypeIridium / Nickel
- ResistorYes
Cross Reference
- MTUX52404500049 / X52404500056 / X52404500062 / X52404500050 / X52404500052 / X52404500027 / X52404500039
- MDE70700180049
- Federal Mogul / BERU0004.800.986.00.07 / 18VGZ1-77
- TennecoFB95WPV / FB95PPV
- MotortechMPC1800 / MPC1900
- C-A-T0346-5123
Applications
- MTU 4000 series (16V4000-L61 / L62 / L63 / L62FB)
- Gas gensets, marine and industrial engines
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.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.

