we are manufacturer, we produce replacement motor starter and alternator for caterpillar, delco-remy, cummins, bosh, and all series auto starter alternator. we produce fuel filter, oil filter, air filter and element replace caterpillar all series filter, can replace volvo, donaldson, komatsu, fleetguard, mitsubishi, cummins, hitchi, hyundai, daewoo, perkins ets.