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56041423AH (The last two letters can be different). Your original part number MUST match: 56041423AH. 1999 Jeep Grand Cherokee 4.0. Engine Computer for About Our Parts. "PARTS ONLY" sales are FINAL.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.