{"product_id":"catalytic-converter-set-for-nissan-frontier-2005-2019-2-5l-front-rear","title":"Catalytic Converter Set for Nissan Frontier (2005-2019) 2.5L Front \u0026 Rear","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Catalytic Converter Set for 2005-2019 Nissan Frontier (D40)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The catalytic converter set replaces the clogged or degraded factory manifold converter and rear secondary unit on the 2005-2019 Nissan Frontier to restore exhaust gas conversion efficiency and eliminate P0420 and P0430 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Frontier Catalytic Converter Failure\u003c\/h3\u003e\n\u003cp\u003eThe factory close-coupled exhaust manifold converter on the \u003cstrong\u003eD40\u003c\/strong\u003e Frontier equipped with the \u003cstrong\u003eQR25DE\u003c\/strong\u003e engine experiences severe thermal cycling and sustained exhaust vibration. Over time, the fragile OEM ceramic washcoat degrades and suffers structural matrix fracture or thermal breakdown. This degradation leads to substrate dusting, restrictive carbon clogging, and reduced catalyst efficiency that triggers persistent \u003cstrong\u003eP0420\u003c\/strong\u003e DTCs. In severe instances, internal core collapse causes exhaust backpressure spikes that stifle scavenging, degrade fuel economy, and cause erratic idling.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement assembly utilizes a high-temperature 409 stainless steel tubular manifold integrated with a robust 600 CPSI cordierite ceramic substrate. Formulated with a balanced washcoat of palladium and rhodium precious metals, both the integrated manifold converter and the secondary rear converter deliver high-efficiency conversion of hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx). CNC-machined thick-gauge flanges ensure a leak-free seal to the cylinder head, while factory-located \u003cstrong\u003eO2 sensor bungs\u003c\/strong\u003e preserve baseline closed-loop fuel trims without sensor wiring modifications. Mandrel-bent transition tubing minimizes parasitic backpressure to return volumetric efficiency to factory spec.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Front Exhaust Manifold Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003e1x Rear Underfloor Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003eInstallation Mounting Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2005-2019 Nissan Frontier\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eQR25DE \/ D40\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e152 hp \/ 171 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2005-2019 Nissan Frontier 2.5L 4-Cylinder (QR25DE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the D40 Frontier?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2005-2019 Nissan Frontier equipped with the \u003cstrong\u003eQR25DE\u003c\/strong\u003e 2.5L engine. \u003cstrong\u003eThis set is not compatible with 4.0L V6 models, nor is it legal for sale or use on vehicles registered in California, Colorado, New York, or Maine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs cutting or welding required for installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this direct-fit bolt-on assembly matches factory mounting provisions and uses original exhaust hanger and oxygen sensor locations without fabrication.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan Frontier Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle sustained utility hauling and daily work duty, this 409 stainless steel dual-converter assembly provides durable federal emissions compliance and restored engine breathing across demanding fleet conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67901465100536,"sku":"DS-EF0NNPAQ3","price":145.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-set-for-nissan-frontier-2005-2019-2-5l-front-rear-1.jpg?v=1793336685","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-set-for-nissan-frontier-2005-2019-2-5l-front-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}