Komatsu Plug Expansion 6736-21-1810

The Komatsu Plug Expansion 6736-21-1810 is identified in the supplied parts catalog as a CYLINDER BLOCK & COMPONENTS for specific Komatsu diesel engine and equipment configurations. Cataloged engine models include SAA4D102E-2B, S6D102E-1AA, and S6D102E-1AB & SA6D102E-1AB. Listed machine applications include D31EX-21, D31PX-21, D37EX-21, D37PX-21, and D39EX-21. Use the complete model and serial-number details below to compare this part with the equipment being serviced.

What is 6736-21-1810 used for?

Part number 6736-21-1810 is cataloged as a Plug Expansion. It appears in the CYLINDER BLOCK & COMPONENTS parts group. The correct selection depends on the engine model, machine model, and the applicable serial-number range.

Compatible engine models

SAA4D102E-2B, S6D102E-1AA, S6D102E-1AB & SA6D102E-1AB

Engine models with serial-number ranges

SAA4D102E-2B (Build 3F) ? 26277757-Up | S6D102E-1AA (Build 4A) ? 21180000-21295203 | S6D102E-1AB & SA6D102E-1AB (Build 4B) ? 21295204-Up & 21296537-Up

Application models without serial numbers

D31EX-21, D31PX-21, D37EX-21, D37PX-21, D39EX-21, D39PX-21, PC160LC-7, GD530A/AW-2A/2B/2C, GD530A-1/AW-1, GD530A-1E, PC200-6/LC-6, PC210-6K, PC210LC-6, PC210LC-6K, WA180-1LC, WA250-1LC, D41E-6 / P-6, PC228US-2-KJ, D41E-6K/ 6K-B, PC230-6 / LC-6, PC200-6B, PC240-6K, PC200-6 / LC-6 / 6H, PC240LC-6K, PC200-6, PC240NLC-6K, PC200-6Z / LC-6Z, PC250-6, PC200CA-6, PC250HD-6, PC200CA-6-C1, PC250LC-6, PC200CA-6-U1, PC250LC-6, PC200EL-6K, GD521A-1E, PC200EN-6K, GD530A/AW-2B/2C, PC200LL-6, WA180-3/3A, PC200Z-6LE, WA180-3 Avance Plus, PC210-6, WA180-3 Avance Plus PTC, WA180-3L, PC210LC-6, WA180L-3, WA250-3 Avance Plus, PC220-6 / LC-6, WA250-3 Avance Plus PTC, PC220LC-6, WA250-3A, PC220LL-6, WA250-3L, PC228USLC-1, WA250-3L PTC, PC228USLC-2, WA250L-3, PC228US-1T, WA300L-3, PC228UU-1-NZ, WA320-3 Avance Custom

Applications with serial-number ranges

D31EX-21 S/No. 50001-Up, D31PX-21 S/No. 50001-Up, D37EX-21 S/No. 50001-Up, D37PX-21 S/No. 50001-Up, D39EX-21 S/No. 1001-Up, D39PX-21 S/No. 1001-Up, PC160LC-7 S/No. 10001-Up, GD530A/AW-2A/2B/2C S/No. 202002-Up, GD530A-1/AW-1 S/No. 200840-201999, GD530A-1E S/No. 201404-Up, PC200-6/LC-6 S/No. A82001-Up, PC210-6K S/No. K30001-Up, PC210LC-6 S/No. A82001-Up, PC210LC-6K S/No. K30001-Up, WA180-1LC S/No. A75001-Up, WA250-1LC S/No. A65001-Up, D41E-6 / P-6 S/No. B20001-Up, PC228US-2-KJ S/No. 15001-Up, D41E-6K/ 6K-B S/No. 50001-Up, PC230-6 / LC-6 S/No. 10001-Up, PC200-6B S/No. C10001-Up, PC240-6K S/No. K30001-Up, PC200-6 / LC-6 / 6H S/No. 80001-Up, PC240LC-6K S/No. K30001-Up, PC200-6 S/No. A83001-Up, PC240NLC-6K S/No. K30001, PC200-6Z / LC-6Z S/No. 80001-Up, PC250-6 S/No. 10001-Up, PC200CA-6 S/No. T10001-Up, PC250HD-6 S/No. 10001-Up, PC200CA-6-C1 S/No. T10001-Up, PC250LC-6 S/No. 10001-Up, PC200CA-6-U1 S/No. T10001-Up, PC250LC-6 S/No. A83001-Up, PC200EL-6K S/No. K30001, GD521A-1E S/No. 12001-Up, PC200EN-6K S/No. K30001, PC200LL-6 S/No. A85001-Up, WA180-3/3A S/No. 53001-Up, PC200Z-6LE S/No. A83001-Up, PC210-6 S/No. 30001-Up, WA180-3L S/No. A80001-Up, PC210LC-6 S/No. A83001-Up, WA180L-3 S/No. 54001-Up, PC220-6 / LC-6 S/No. 50001-Up, PC220LC-6 S/No. A83001-Up, WA250-3A S/No. 53001-Up, PC220LL-6 S/No. A85001-Up, WA250-3L S/No. A70001-Up, PC228USLC-1 S/No. 11001-Up, PC228USLC-2 S/No. 15001-Up, WA250L-3 S/No. 53001-Up, PC228US-1T S/No. 11001-Up, WA300L-3 S/No. 53001-Up, PC228UU-1-NZ S/No. 11001-Up

How do I confirm fitment?

Match 6736-21-1810 to the existing part number and verify the complete engine model, equipment model, and serial number. A shared model name does not confirm compatibility because production changes can affect the required component.

Frequently asked question

Will 6736-21-1810 fit every listed Komatsu machine?
No. Fitment is limited to the cataloged engine, application, and serial-number combinations. Confirm all identifying information before ordering.