car overheating/blown head gasket
Hi. I am a newbie. I have a 2004 bmw 325i with m56 engine. I ran over something and caused a chain reaction from breaking the belt, hoses and water pump to overheating and breaking the head gasket. I am having hard time finding a used M56 engine to do a swap. So I am going to spend $250 to see if I just need to replace the head gasket, since I already spent $530 to fix belts, hoses and water pump. My insurance company is refusing to pay for the damage, stating it couldn't have been caused by the accident. Any advice? I got one estimate to swap used engine at $4500. Help.