Choosing TAKUMI means buying directly from the source. Our factory in China runs dedicated production lines for industrial and automotive spark plugs with full traceability.

Product Overview

TAKUMI S-R6A12 spark plug is a form, fit and function equivalent replacement for OEM part 12453556. TAKUMI S-R6A12 is a drop-in prechamber spark plug for MWM TCG 2020 and CAT CG 170 gas engines. 8-hole prechamber design, M18x1.5 thread, 0.3 mm gap. Installs without engine parameter changes.

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.

Replaces 1245-2074 (updated from old version 1230-1641) for MWM TCG 2020.

Key Specifications

• TAKUMI TypeS-R6A12
• Thread SizeM18 x 1.5
• Reach26 mm
• Hex Size22.2 mm (7/8")
• Seat TypeFlat / Gasket
• Spark Gap0.3 mm
• Electrode TypePrechamber (8-hole)
• Cable Length540 mm
• Shield Length278 mm
• ResistorYes

Cross Reference

• MWM1245-3572 / 1245-3318 / 1245-2828 / 1245-2176 / 1245-3388 / 1245-2074 / 1230-1641 / 1245-2835
• C-A-T1245-3556
• DEUTZ1245-2074 / 1230-1641

Applications

• MWM TCG 2020 V12 / V16 / V20
• CAT CG 170 V12 / V16 / V20
• Natural gas, biogas and landfill gas CHP plants

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

The testing equipment is calibrated regularly and all inspection records are kept for at least three years, supporting fast after-sales analysis.

Application

In continuous-duty generator applications, consistent ignition reduces misfire-related downtime and lowers maintenance cost over the engine's lifetime.

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.