{"product_id":"8m0141844-mechanical-fuel-pump-21fp004","title":"8M0141844 Mechanical Fuel Pump Assembly","description":"\u003ch2\u003eMechanical Fuel Pump — Compatible with select Mercury Mariner 25 \/ 30 \/ 40 HP Four-Stroke Carb\u003c\/h2\u003e\n\u003ch3\u003eWhich pump is this?\u003c\/h3\u003e\n\u003cp\u003eThis is one complete mechanical diaphragm fuel-pump assembly for Mercury \/ Mariner four-stroke carbureted 3-cylinder 25 \/ 30 \/ 40 HP engines. Current ordering number is 8M0141844. Predecessors on this carb family: 881862T1, 881862T07, 892874T, 899106T, 8M0118176. Compatible with the three carb rows in the table — 25 HP carb, 30 HP carb 3-cyl, 40 HP carb 3-cyl — in the serial bands listed (examples: 0P153500 through later 0T409000 \/ 1B \/ 1C ranges). It is not the EFI 30–60 HP family (881862T \/ T08, 892874T01, 899106T01, 8M0118177, 8M0141827). Aftermarket pages that merge carb and EFI under one number are too wide. Horsepower 50 \/ 60 EFI is not this pump.\u003c\/p\u003e\n\u003ch3\u003eSigns yours is due\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e25 \/ 30 \/ 40 HP four-stroke carb 3-cyl cranks, fires, then dies until you pump the bulb — carb float bowl is not being filled.\u003c\/li\u003e\n\u003cli\u003eFuel weep at the mechanical pump on a carb motor (throttle body \/ carb still has bowls, not a VST-only EFI setup).\u003c\/li\u003e\n\u003cli\u003eYou compared the old stamp: 881862T1 or 881862T07, not 881862T08 \/ 8M0141827.\u003c\/li\u003e\n\u003cli\u003eNot 2-stroke 30–65 HP 14360A16 \/ A78 (21FP012 family). Not a water-pump impeller.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWill it fit?\u003c\/h3\u003e\n\u003cp\u003eCompatible with Mercury \/ Mariner 25 HP carb, 30 HP carb 3-cylinder, and 40 HP carb 3-cylinder four-stroke engines in the serial ranges in the table. Catalogs organize these by serial, not by model year — read the serial on the midsection or swivel bracket. 25 HP carb examples: 0P153500–0P388282 and 0T409000–1B344298. 30 HP carb 3-cyl examples: 0P153500–0P400999 and 0T409000–1B226999. 40 HP carb 3-cyl has the longest list (0P153500–0P400999, 0P401000–1B344306, 0T409000–1B226999, 1B227000–1B344306, 1C000001–1C018825, 1C018826–1C739634 across overlapping catalog pages). 30–60 HP EFI four-stroke uses a different pump family. Do not use cowl horsepower alone: a 40 HP EFI and a 40 HP carb are not the same pump.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEngine horsepower alone does not prove fit.\u003c\/strong\u003e Match the number stamped on the pump you remove to the OEM column.\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eSerial\u003c\/th\u003e\n\u003cth\u003eHP\u003c\/th\u003e\n\u003cth\u003eOEM no.\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e25 HP Carb\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e0P153500 THRU 0P388282；0T409000 THRU 1B344298\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e881862T07 \/ 881862T1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e30 HP Carb 3 CYL\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e0P153500 THRU 0P400999；0T409000 THRU 1B226999\u003c\/td\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003ctd\u003e881862T07 \/ 881862T1 \/ 892874T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e40 HP Carb 3 CYL\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e0P153500 THRU 0P400999；0P401000 THRU 1B344306；0T409000 THRU 1B226999；1B227000 TH\u003c\/td\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e881862T07 \/ 881862T1 \/ 892874T \/ 899106T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eEvery row is from this SKU fitment workbook (3 rows after empty-line filter). Same horsepower name shipped different pumps.\u003c\/p\u003e\n\u003ch3\u003eOEM and swap numbers\u003c\/h3\u003e\n\u003cp\u003eOEM \/ predecessor numbers keep the engine-brand column. Aftermarket cross-refs are numbers only.\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003cth\u003ePart no.\u003c\/th\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eName\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003ctd\u003e8M0141844\u003c\/td\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003ePUMP, Fuel (Sold Complete Only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epredecessor\u003c\/td\u003e\n\u003ctd\u003e881862T1\u003c\/td\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003ePUMP Fuel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epredecessor\u003c\/td\u003e\n\u003ctd\u003e881862T07\u003c\/td\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003ePUMP Fuel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epredecessor\u003c\/td\u003e\n\u003ctd\u003e892874T\u003c\/td\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003ePUMP Fuel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epredecessor\u003c\/td\u003e\n\u003ctd\u003e899106T\u003c\/td\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003ePUMP Fuel (Sold Complete Only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epredecessor\u003c\/td\u003e\n\u003ctd\u003e8M0118176\u003c\/td\u003e\n\u003ctd\u003eCompatible with Mercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eFUEL PUMP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ecross-ref\u003c\/td\u003e\n\u003ctd\u003ePAF40-05050000\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e881862T1 \/ 881862T07 \/ 892874T \/ 899106T \/ 8M011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ecross-ref\u003c\/td\u003e\n\u003ctd\u003eOMAX-881862T07\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e881862T07\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWrong part\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNOT 8M0141827 \/ 881862T08 \/ 892874T01 \/ 899106T01 — EFI 30–60 HP family (21FP005).\u003c\/li\u003e\n\u003cli\u003eNOT 18-8866 — that cross-ref tracks the EFI family, not this carb pump.\u003c\/li\u003e\n\u003cli\u003eNOT 803529T06 \/ 803529T04 (small 4–6 \/ 8–9.9 HP four-stroke) and NOT 2-stroke 14360A16 \/ A78.\u003c\/li\u003e\n\u003cli\u003eNOT kit 26FFK030 (this pump plus a filter). This page is the pump only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat ships\u003c\/h3\u003e\n\u003cp\u003eOne complete mechanical fuel-pump assembly. No fuel filter, no EFI VST pump, no carburetor kit.\u003c\/p\u003e\n\u003ch3\u003eOften replaced together\u003c\/h3\u003e\n\u003cp\u003eEFI 30–60 HP four-stroke pumps are 21FP005, not this page. 26FFK030 is the pump-plus-filter kit. 2-stroke 30–65 HP pumps are 21FP012 (identity still unconfirmed on A16 vs A78 — do not mix).\u003c\/p\u003e\n\u003ch3\u003eInstall\u003c\/h3\u003e\n\u003cp\u003eConfirm carb vs EFI before you open the cowl: this pump is for carb 3-cyl 25 \/ 30 \/ 40 HP four-stroke. Read the serial against the table. Photograph the pulse hose. Remove the flange screws, scrape the pad, fit a new gasket with the pulse hole open. Do not install an EFI-family body (8M0141827) on a carb pad or the other way around — brackets can look close. Snug screws evenly. Prime the bulb, leak-check, idle on muffs, then a short lake test. If the motor is 50 \/ 60 EFI, stop — wrong SKU.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWill this fit my Mercury 40 HP four-stroke?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOnly the carb 3-cylinder serial bands in the table. 40 HP EFI uses 8M0141827 \/ 881862T08 (21FP005). Read carb vs EFI and the serial.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-8866 the same?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. 18-8866 tracks the EFI family. This carb page does not replace 18-8866.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 881862T07 the same as 881862T08?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. T07 is on this carb family. T08 is EFI. One letter \/ suffix off is a different pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial do I need?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eExamples in the table: 25 HP carb 0P153500–0P388282 and 0T409000–1B344298; 30 \/ 40 HP carb use the overlapping 0P \/ 0T \/ 1B \/ 1C bands listed. Match your serial to a row.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat ships?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOne mechanical pump assembly. Not the 26FFK030 kit.\u003c\/p\u003e\n\u003ch3\u003ePlease note\u003c\/h3\u003e\n\u003cp\u003eAftermarket fuel pump by GHMarine. Not affiliated with the engine brands named above. «Compatible with», «Replaces», and cross-ref numbers mean this part is built to work like the originals listed — always confirm the stamp on the removed pump, the engine model, and the serial range before you order. This page is the pump only, not a multi-part kit.\u003c\/p\u003e","brand":"GHMarine","offers":[{"title":"Default Title","offer_id":51797482307830,"sku":"21FP004","price":49.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/5781\/8102\/files\/ghm_21FP004_01.jpg?v=1791336518","url":"https:\/\/gh-marine.com\/products\/8m0141844-mechanical-fuel-pump-21fp004","provider":"GH Marine","version":"1.0","type":"link"}