The N54 engine sees failure at the plastic cylinder head outlet adapter connecting the cylinder head to the thermostat hose. For N54 3.0L twin-turbo motors 335i, 335xi, 135i and 1M. Billet Aluminum Coolant Port Fitting Upgrade for BMW.
Billet Aluminum 2 Port Air Conditioning / Heater Firewall Bulkhead Fittings AC
Billet Aluminum Coolant Reservoir Cap For BMW 3 Series E9X 335i 325i 330i M3
Billet Aluminum Coolant Reservoir Cap For BMW E90 E92 E91 320i 328i 325i 330i
GXP Direct Replacement Billet Aluminum Coolant Plate with O-Ring Seal...
8 NEW Billet Aluminum Port Plugs -08 AN x 1.00" SB2.2 & Dodge Aluminum Heads
4-Port Billet Aluminum Firewall Heater & A/C Bulkhead Combo Hot Rod
