Lubrication System/Oil Cooler OIL COOLER IDENTIFICATION Two types of oil cooler are installed on engines: Type 1 (A) is a standard oil cooler which is clamped between oil filter and cylinder block or adapter housing. CD30405 -UN-10MAY95 CD30270 -UN-06MAR95 Type 2 (B) is a high-flow oil cooler which is attached to the cylinder head or block. A—Standard oil cooler with 6, 8 or 10 plates B—High-flow oil cooler with 7 plates CD,3274,G25,5 -19-01FEB94 25 15 CTM3274 (01JUL99) 25-15 Saran Liter Engines 060799 PN=176