{"product_id":"caterpillar-161-9926-aftermarket-pressure-sensor","title":"Caterpillar 161-9926 Aftermarket Pressure Sensor","description":"\u003cdiv style=\"font-family:Roboto,sans-serif;color:#1a1a1a;line-height:1.6\"\u003e\n\u003cstyle\u003e@import url('https:\/\/fonts.googleapis.com\/css2?family=Roboto+Condensed:wght@700\u0026family=Roboto:wght@400;700;900\u0026display=swap');.spm-c{border:1px solid #d1d1d1;background:#fff;margin-bottom:25px;overflow:hidden}.spm-h{padding:15px 20px;background:#ffce02;border-bottom:1px solid #d1d1d1;font-weight:900;text-transform:uppercase;font-size:16px;color:#000;letter-spacing:.05em;font-family:'Roboto Condensed',sans-serif}.spm-t{width:100%;border-collapse:collapse;font-size:15px}.spm-t th{padding:12px 10px;text-align:left;background:#f4f4f4;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid #d1d1d1;color:#000}.spm-t td{padding:11px 10px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}.spmL{font-weight:700;color:#333;background:#fcfcfc;width:38%}.spm-sub{display:block;color:#777;font-size:12.5px;margin-top:2px}.spm-chip{display:inline-block;margin:0 8px 8px 0;padding:6px 12px;border:1px solid #d1d1d1;background:#fcfcfc;font-size:14px;font-weight:700;color:#000}.spm-h2{font-family:'Roboto Condensed',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin:40px 0 20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px}.spm-p{font-size:16px;line-height:1.8;margin:0 0 18px}@media(max-width:700px){.spmL{width:auto}}\u003c\/style\u003e\n\u003cp class=\"spm-p\"\u003eCaterpillar 161-9926 is the engine pressure sensor: a brass body with a female threaded port and a round three pin plug. It is used on Caterpillar 3406E and 3412 engines. This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003eSold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003eTechnical Properties \u0026amp; Sizes\u003c\/h2\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable class=\"spm-t\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003ePart Type\u003c\/td\u003e\n\u003ctd\u003ePressure Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eCaterpillar 161-9926\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e3 pin, round\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eBody\u003c\/td\u003e\n\u003ctd\u003eBrass, female thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eFits\u003c\/td\u003e\n\u003ctd\u003eCaterpillar 3406E, 3412, 3412C, 3456, 3508, 3512 and 3516 engines, as fitted to 834B, 844 and 854G wheel dozers and 329, 330, 336 and 345D excavators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew, aftermarket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eStat. HS-Code\u003c\/td\u003e\n\u003ctd\u003e903289\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"spmL\"\u003eCountry of Manufacture\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003eCompatibility\u003c\/div\u003e\n\u003cdiv style=\"padding:20px\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;color:#333\"\u003eCaterpillar machines\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan class=\"spm-chip\"\u003eCaterpillar 3406E, 3412, 3412C, 3456, 3508, 3512 and 3516 engines, as fitted to 834B, 844 and 854G wheel dozers and 329, 330, 336 and 345D excavators\u003c\/span\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#666;margin:0 0 18px\"\u003eCheck the part number on your old unit before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spm-c\"\u003e\n\u003cdiv class=\"spm-h\"\u003ePart Numbers\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable class=\"spm-t\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCaterpillar Part No.\u003cspan class=\"spm-sub\"\u003e(SPM Part No.)\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003e161-9926\u003c\/strong\u003e\u003cspan class=\"spm-sub\"\u003e(SPM-HEP-4631)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003eCaterpillar 3406E, 3412, 3412C, 3456, 3508, 3512 and 3516 engines, as fitted to 834B, 844 and 854G wheel dozers and 329, 330, 336 and 345D excavators\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"spm-h2\"\u003eApplications \u0026amp; Use Cases\u003c\/h2\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eWrong or missing reading\u003c\/strong\u003e\u003cbr\u003eA failed sensor gives a dead or false gauge reading or a warning light.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eFault codes\u003c\/strong\u003e\u003cbr\u003eCheck the wiring and plug first; if the sensor itself reads out of range, replace it.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eCorrosion\u003c\/strong\u003e\u003cbr\u003eConnectors on machines take water and dirt. A corroded sensor is cheaper to replace than to chase.\u003c\/p\u003e\n\u003cp class=\"spm-p\"\u003e\u003cstrong\u003eFleet spares\u003c\/strong\u003e\u003cbr\u003eCommon sensors are worth keeping in stock for each machine type.\u003c\/p\u003e\n\u003ch2 class=\"spm-h2\"\u003ePrice Beat Guarantee\u003c\/h2\u003e\n\u003c!-- spm-pricebeat --\u003e\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eWe check what other aftermarket sellers charge for this same part. Their prices on the date we checked:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 16px\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e2e2e2\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eSeller\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003ePrice\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:10px 14px;background:#1a1a1a;color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.05em\"\u003eChecked\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eeBay (8 aftermarket sellers)\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 30.00 to 43.66\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e31 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eFridayParts\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 54.60\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e31 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eAllProDiesel (PAI)\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 79.38\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e31 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eHeavyDutyKits (PAI)\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003eUSD 88.90\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px\"\u003e31 Oct 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eSpare Part Mart\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eUSD 24.00\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e2e2e2;font-size:15px;font-weight:700;background:#fff8d6\"\u003eToday\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eOur price of USD 24.00 is 20% to 73% less than these sellers.\u003c\/p\u003e\n\u003cp style=\"font-size:15px;line-height:1.8;margin:0 0 16px\"\u003eFound this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our \u003ca href=\"\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"color:#000;text-decoration:underline\"\u003ePrice Beat Guarantee\u003c\/a\u003e. Every order is also covered by our \u003ca href=\"\/pages\/30-day-money-back-guarante\" style=\"color:#000;text-decoration:underline\"\u003e30 day money back guarantee\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- \/spm-pricebeat --\u003e\u003ch2 style=\"font-family:'Montserrat',sans-serif;font-size:24px;font-weight:900;color:#000;text-transform:uppercase;margin-top:40px;margin-bottom:20px;letter-spacing:.05em;border-bottom:3px solid #ffce02;padding-bottom:15px\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdiv style=\"margin:20px 0\"\u003e\n\u003cdiv style=\"margin-bottom:25px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"color:#000;font-weight:700;margin-bottom:10px;font-size:15px\"\u003eWill it fit my Caterpillar 3406E?\u003c\/h4\u003e\n\u003cp style=\"font-size:14px;line-height:1.7;margin:0;color:#333\"\u003eYes, it was made for the Caterpillar 3406E, and 13 more listed under compatible equipment. Check the old sensor is marked 161-9926 or one of the cross references, because makers change parts between serial ranges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:25px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"color:#000;font-weight:700;margin-bottom:10px;font-size:15px\"\u003eHow often should I replace the sensor on my Caterpillar 3406E?\u003c\/h4\u003e\n\u003cp style=\"font-size:14px;line-height:1.7;margin:0;color:#333\"\u003eOn the Caterpillar 3406E, there is no fixed interval. It is changed when it fails, and many fail from water in the plug or chafed wiring rather than wear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:25px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"color:#000;font-weight:700;margin-bottom:10px;font-size:15px\"\u003eWhat are the signs the sensor needs replacing?\u003c\/h4\u003e\n\u003cp style=\"font-size:14px;line-height:1.7;margin:0;color:#333\"\u003eA fault code for this circuit, readings that jump or stay fixed, or a part that does not respond with power at the plug.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:25px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"color:#000;font-weight:700;margin-bottom:10px;font-size:15px\"\u003eShould I grease the connector?\u003c\/h4\u003e\n\u003cp style=\"font-size:14px;line-height:1.7;margin:0;color:#333\"\u003eA little dielectric grease keeps water out of the plug on machines that work outside. Make sure the terminals are clean and tight first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:25px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"color:#000;font-weight:700;margin-bottom:10px;font-size:15px\"\u003eDoes the voltage matter?\u003c\/h4\u003e\n\u003cp style=\"font-size:14px;line-height:1.7;margin:0;color:#333\"\u003eYes. Many machines have 12 V and 24 V versions of the same sensor. Check the old part or the machine plate before fitting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:25px;padding:15px;background:#f9f9f9;border-left:4px solid #ffce02\"\u003e\n\u003ch4 style=\"color:#000;font-weight:700;margin-bottom:10px;font-size:15px\"\u003eIs this a genuine Caterpillar 161-9926?\u003c\/h4\u003e\n\u003cp style=\"font-size:14px;line-height:1.7;margin:0;color:#333\"\u003eNo. It is an aftermarket sensor made to replace the Caterpillar 161-9926. It is not made by the original manufacturer; the number only shows what it replaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:50px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#d1d1d1;border:1px solid #d1d1d1;margin-bottom:20px\" class=\"spm-trust\"\u003e\n\u003ca href=\"\/pages\/30-day-money-back-guarante\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm-2 16l-4-4 1.41-1.41L10 14.17l6.59-6.59L18 9l-8 8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003e30-Day Money Back Guarantee\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/pages\/delivery-information\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003eWorldwide Delivery\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/pages\/find-it-cheaper-we-will-beat-it-by-5\" style=\"background:#fff;padding:40px 15px;text-decoration:none;display:flex;flex-direction:column;align-items:center;text-align:center;color:#1a1a1a\"\u003e\u003csvg style=\"width:32px;height:32px;margin-bottom:15px;fill:#ffce02\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M21.41 11.58l-9-9C12.05 2.22 11.55 2 11 2H4c-1.1 0-2 .9-2 2v7c0 .55.22 1.05.59 1.42l9 9c.36.36.86.58 1.41.58.55 0 1.05-.22 1.41-.59l7-7c.37-.36.59-.86.59-1.41 0-.55-.23-1.06-.59-1.42zM5.5 8.25c-.69 0-1.25-.56-1.25-1.25s.56-1.25 1.25-1.25 1.25.56 1.25 1.25-.56 1.25-1.25 1.25z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003cspan style=\"font-family:'Roboto Condensed',sans-serif;font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:0.1em\"\u003ePrice Beat Guarantee\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Will it fit my Caterpillar 3406E?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, it was made for the Caterpillar 3406E, and 13 more listed under compatible equipment. Check the old sensor is marked 161-9926 or one of the cross references, because makers change parts between serial ranges.\"}}, {\"@type\": \"Question\", \"name\": \"How often should I replace the sensor on my Caterpillar 3406E?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"On the Caterpillar 3406E, there is no fixed interval. It is changed when it fails, and many fail from water in the plug or chafed wiring rather than wear.\"}}, {\"@type\": \"Question\", \"name\": \"What are the signs the sensor needs replacing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A fault code for this circuit, readings that jump or stay fixed, or a part that does not respond with power at the plug.\"}}, {\"@type\": \"Question\", \"name\": \"Should I grease the connector?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A little dielectric grease keeps water out of the plug on machines that work outside. Make sure the terminals are clean and tight first.\"}}, {\"@type\": \"Question\", \"name\": \"Does the voltage matter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Many machines have 12 V and 24 V versions of the same sensor. Check the old part or the machine plate before fitting.\"}}, {\"@type\": \"Question\", \"name\": \"Is this a genuine Caterpillar 161-9926?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. It is an aftermarket sensor made to replace the Caterpillar 161-9926. It is not made by the original manufacturer; the number only shows what it replaces.\"}}]}]}\u003c\/script\u003e","brand":"Spare Part Mart","offers":[{"title":"Default Title","offer_id":67712267321644,"sku":"SPM-HEP-4631-P1","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/9152\/6700\/files\/sino40_1619926_0.jpg?v=1793378997","url":"https:\/\/sparepartmart.co\/products\/caterpillar-161-9926-aftermarket-pressure-sensor","provider":"Spare Part Mart","version":"1.0","type":"link"}