These cooling shrouds have the rounded shape of the old 30 hp cooling shrouds, but they are intended for all type 1 engines. This shape provides more space for the installation of dual carburetors.

If the engine is built without an oil cooler on the engine (only an external oil cooler), you should use the cooling shroud without oil cooler sheet metal (until 1970), a recess for the hoses is prepared.

All these cooling shrouds must be equipped with the thick model fan.

Available in various versions:

• Tunnel no heater without oil cooler suitable for 1200/1500 cc 1300 cc up to 7.1970 (300241)
• Tunnel with heater suitable for 1200/1500 cc 1300 cc up to 7.1970 (300242)
• Tunnel no heater with oil cooler suitable for 1300/1600 cc 8.1970 and later (300798)
• Tunnel with heater suitable for 1300/1600 cc 8.1970 and later (300641)