Forward Gear Set (1.64:1) for Mercury Mariner 30, 40, 50, 60 HP (4 CYL) EFI / 40 CARB (3CYL). This gear set is used in gearcase gears, shafts and seals. Recorded OEM cross-references include 43-803499T1. Use REC43-803499T1 to identify the offered item. Selection warning: Match the exact product code and OEM reference 43-803499T1 to the part being replaced. Confirm the full model, production details and serial range. Product details Product Forward Gear Set (1.64:1) Product code REC43-803499T1 Product type Gear Set Compatible make MerCruiser / Mercury / Mariner Primary application Mercury Mariner 30, 40, 50, 60 HP (4 CYL) EFI / 40 CARB (3CYL) Assembly Gearcase gears, shafts and seals Key points Product type: Gear Set Compatible make: MerCruiser / Mercury / Mariner Application: Mercury Mariner 30, 40, 50, 60 HP (4 CYL) EFI / 40 CARB (3CYL) OEM cross-reference: 43-803499T1 Compatibility and fitment Mercury Mariner 30, 40, 50, 60 HP (4 CYL) EFI / 40 CARB (3CYL) Gearcase gears, shafts and seals MERCURY / MARINER 60HP 3-CYL OUTBOARD GEARCASE Exact fitment rule MERCURY / MARINER L4 100HP 1.85L OUTBOARD GEARCASE Exact fitment rule Where model, year, serial, ratio, rotation, side or material varies, the exact selection details take priority over a broad model-family match. Part numbers and cross-references Offered product code REC43-803499T1 OEM cross-reference 1 43-803499T1 OEM references are provided for identification. A cross-reference does not mean the item is supplied as a genuine OEM product. Before ordering Confirm the full engine, outboard or drive model. Check the product code and every relevant OEM reference. Apply any serial, year, ratio, rotation, side or material limit. Compare the replacement with the component being removed. Ask TMP Global to check the application if any identifier differs. Frequently asked questions What does REC43-803499T1 replace? Recorded OEM cross-references include 43-803499T1. How do I confirm that REC43-803499T1 is correct? Match the product code and OEM reference, then confirm the model, production details, serial range and assembly position. Do not select the part by appearance alone.