Pacific Performance Engineering, also known as PPE, produces diesel platform innovations and creates performance products to enhance and improve the Duramax diesel platform. Here at Merchant Automotive, we offer a variety of PPE Duramax parts including performance transmission coolers and a Duramax boost increase valve that are capitable with 2001-2004 LB7, LLY, LBZ, and LMM Duramax engines.
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