duramax-lly-lbz-lmm-return-line-kit-pair Home / Chevy / GMC Duramax Injectors / LMM 2007.5-2010 / Chevy / GMC Duramax LMM Accessories / LLY/LBZ/LMM Return Line Kit / duramax-lly-lbz-lmm-return-line-kit-pair Written By Anna Mullen April 23rd, 2021 Share this...FacebookPinterestTwitterLinkedin