KLG Spark Plug ML30

The KLG ML30 is a long-reach spark plug for engines taking 18mm × ¾" plugs, with applications drawn from 1950s KLG recommendations.

Listed cars and light vehicles include Armstrong Siddeley, BSA F.W.D. four-wheelers, Morris OHV models (Cowley Four 1931–32, Oxford 1930–35 and Major Six 1931–33), and Raleigh three-wheelers. Motorcycle recommendations include Francis Barnett Cruiser, Plover and Seagull models from 1935–40; James pre-1940 models requiring long-reach 18mm plugs; and Villiers engines: 98cc Junior De Luxe, Midget, MK2 and MK3; 199cc 1E, 2E and 3E; 172cc Sports; 247cc 7E; 250cc 6E; 197cc VIA, VIIA, VIIIA, XA, XIVA, XVIA, 17A and 18A; and 148cc XIIC and XVC.

Commercial vehicle listings name Dennis Pax and Horia (1945–55), other Dennis models (1939–54), early Morris models taking long-reach plugs, and S.D. (Shelvoke & Drewry) “W” type chassis. Tractor recommendations include John Deere B, BN, BW, BNH and BWH (Distillate); G, GH, GM, GW, H, HN, HNH and HWH (Distillate); and Models 50 and 60.