OER Parts offers a wide selection of Oil System & Parts for your GMC G35/G3500 Van. OER Parts offers GMC G35/G3500 Van Bypass Valves, GMC G35/G3500 Van Dipsticks and Tubes, GMC G35/G3500 Van Filter Adapters, GMC G35/G3500 Van Oil Coolers, GMC G35/G3500 Van Oil Filters, GMC G35/G3500 Van Oil Pan Baffles, GMC G35/G3500 Van Oil Pans, GMC G35/G3500 Van Oil Pickup Tubes, GMC G35/G3500 Van Oil Pumps, and GMC G35/G3500 Van Oil Senders.