No matter the condition of your 1974 Bonneville, OPGI has the Exhaust products you need to boost performance and get you back on the road. We currently carry 211 Exhaust items to choose from for your 1974 Bonneville, and our Price Match Guaranteed prices range from as little as $2.84 up to $1,479.99. OPGI offers Magnaflow plus eleven other trusted brands of Exhaust products for your 1974 Bonneville, to help you find quality parts you can rely on. With OPGI's 45-day return policy and thousands of customer reviews, you can shop with the utmost confidence. Enjoy parts delivered directly to your home, or visit our sunny Southern California Showroom & Warehouse to check out our Exhaust items in person.