TAKUMI S-R6A12 Spark Plug 1245-2828 1245 2828 1245-2828 Iridium Generator Spark Plug For MWM TCG2020 Gas Engine Replaces
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 12452828. 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.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.


