{"title":"Pressure Relief Valves","description":"One of the most commonly failed components of a common rail fuel system is that of the pressure relief valve. Why? In short, this relatively simple valve is located on the fuel rail before the injectors and after the injection pump and its intended purpose is to regulate fuel rail pressure before the fuel hits the injectors. It acts as a wastegate to bypass excessive pressure and return that diesel to the fuel system. Unfortunately, this valve (sometimes called a PRV for short) has an internal spring that is known to fatigue, allowing fuel to bypass before necessary. Imagine trying to fill up a balloon with a hole in it, basically the same principle. While some will take the route of installing a pressure relief block, this will allow any unaccounted for spikes in the fuel system to have no choice but to be run through the injectors, potentially causing harm. The most common reasons for spikes are from chips or programmers that ramp up rail pressure substantially beyond factory limitations and\/or failing injection pumps, or parts of the injection pump, most namely the Fuel Control Actuator (FCA) and pump gear. \u003cbr\u003e\u003cbr\u003e\nIn most cases, a failed pressure relief valve will lead to hard start or no start situations because the truck can't build enough rail pressure to fire. The simplest method to confirm if your truck is in need of a new relief valve is to remove the return line located on the top of the PRV and have someone crank the truck while you inspect the top of the relief valve. If there is fuel present, and especially if its trickling out at start up pressure, you need a new valve.\n\u003cbr\u003e\u003cbr\u003e\nAs always, if you've got any questions about your pressure relief valve or anything else, please do not hesitate to give us a call at 888-993-4373 or send an e-mail to cs@dieselpowerproducts.com and we would be happy to assist.","products":[{"product_id":"ats-valve-block-off-cummins-duramax","title":"ATS 7050502326 Pressure Relief Valve Block Off 6.7L Cummins \/ Duramax","description":"\u003cp\u003eAll of the Common Rail Cummins and Duramaxs feature a relief in the fuel rail which is designed to relieve pressure once it sees roughly 25,000 PSI to avoid damage to the stock injectors.  However, most chips and programmers are designed to deliver pressure higher than this, causing the higher pressure fuel to not get to the injectors, losing power, and eventually causing the failure of the stock pressure relief valve.\u003cbr\u003e\u003cbr\u003eThis simple device will block off the relief valve located on your fuel rail, ensuring that ALL rail pressure is delivered to the injectors, gaining power on the top end. Torque to 70 ft-lbs when installed.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"ATS Diesel Performance","offers":[{"title":"Default Title","offer_id":52076855329133,"sku":"ATS-7050502326","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/10124.gif?v=1752689361"},{"product_id":"bosch-1110010013-valve-075-18-cummins","title":"Bosch 1110010013 Pressure Relief Valve 07.5-18 Ram 6.7L Cummins","description":"\u003cp\u003eOne of the most prevalent issues we see causing hard starts, lack of power, and poor fuel economy, is that of a blown or weak pressure relief valve.  The pressure relief valve is a simple....you guessed it....relief valve located in your fuel rail designed to limit rail pressure to avoid damage to your injectors.  Once it  enough rail pressure, it will bleed off and return the fuel back to the injection pump to be recycled back into the system.  Because this is a simple spring valve, it will lose its memory and begin to start bleeding off prematurely, not allowing the rail to build adequate pressure, in turn meaning the injectors are not getting adequate pressure.  Many will take the option to simply block off the relief valve, which definitely works, but it does mean that you are removing a built-in safe guard from the factory.If you're like many and would prefer to reinstall a fresh relief valve, check out this genuine Bosch unit for years of trouble free service. Torque to 70 ft-lbs when installed.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52076923945325,"sku":"BOSCH-1110010013","price":98.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/BOSCH-1110010013_1.jpg?v=1772232155"},{"product_id":"bosch-f00r000632-valve-03-07-cummins","title":"Bosch 1110010029 Pressure Relief Valve 03-07 Ram 5.9L Cummins","description":"\u003cp\u003eOne of the most prevalent issues we see causing hard starts, lack of power, and poor fuel economy, is that of a blown or weak pressure relief valve.  The pressure relief valve is a simple....you guessed it....relief valve located in your fuel rail designed to limit rail pressure to avoid damage to your injectors.  Once it builds enough rail pressure, it will bleed off and return the fuel back to the injection pump to be recycled back into the system.  Because this is a simple spring valve, it will lose its memory and begin to start bleeding off prematurely, not allowing the rail to build adequate pressure, in turn meaning the injectors are not getting adequate pressure.  Many will take the option to simply block off the relief valve, which definitely works, but it does mean that you are removing a built-in safe guard from the factory.If you're like many and would prefer to reinstall a fresh relief valve, check out this genuine Bosch unit for years of trouble free service.\u003c\/p\u003e\n\u003cp\u003eThis part number supersedes 1110010029\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52076924698989,"sku":"BOSCH-1110010029","price":104.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/15051.gif?v=1752689580"},{"product_id":"industrial-412512-block-off-duramax","title":"Industrial Injection Pressure Relief Valve Block Off 01-04 6.6L GM Duramax LB7","description":"All of the Common Rail Duramax's feature a relief in the fuel rail which is designed to relieve pressure once it sees roughly 25,000 PSI to avoid damage to the stock injectors.  However, most chips and programmers are designed to deliver pressure higher than this, causing the higher pressure fuel to not get to the injectors, losing power, and eventually causing the failure of the stock pressure relief valve.\u003cbr\u003e\u003cbr\u003eThis simple device will block off the relief valve located on your fuel rail, ensuring that ALL rail pressure is delivered to the injectors, gaining power on the top end.","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":52077038961005,"sku":"IIS-412512","price":53.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/412512_001.jpg?v=1752689979"},{"product_id":"industrial-valveblockoff-03-07-cummins","title":"Industrial Injection Pressure Relief Valve Block Off 03-07 Dodge 5.9L Cummins","description":"\u003cp\u003eAll of the Common Rail Cummins feature a relief in the fuel rail which is designed to relieve pressure once it sees roughly 25,000 PSI to avoid damage to the stock injectors.\u003c\/p\u003e\n\u003cp\u003eHowever, most chips and programmers are designed to deliver pressure higher than this, causing the higher pressure fuel to not get to the injectors, losing power, and eventually causing the failure of the stock pressure relief valve.\u003c\/p\u003e\n\u003cp\u003eThis simple device will block off the relief valve located on your fuel rail, ensuring that ALL rail pressure is delivered to the injectors, gaining power on the top end.\u003c\/p\u003e","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":52077039026541,"sku":"IIS-237603","price":39.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/237603_001.jpg?v=1752689980"},{"product_id":"industrial-relief-valve-block-off","title":"Industrial Injection Pressure Relief Valve Block Off 07.5-18 Dodge 6.7L Cummins \/ 04.5-10 GM Duramax","description":"\u003cp\u003eAll of the Common Rail Cummins and Duramax's feature a relief in the fuel rail which is designed to relieve pressure once it sees roughly 25,000 PSI to avoid damage to the stock injectors. However, most chips and programmers are designed to deliver pressure higher than this, causing the higher pressure fuel to not get to the injectors, losing power, and eventually causing the failure of the stock pressure relief valve.\u003c\/p\u003e\n\u003cp\u003eThis simple device will block off the relief valve located on your fuel rail, ensuring that ALL rail pressure is delivered to the injectors, gaining power on the top end. Torque to 70 ft-lbs when installed.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Industrial Injection","offers":[{"title":"Default Title","offer_id":52077039190381,"sku":"IIS-631601","price":38.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/7778.jpg?v=1752689981"},{"product_id":"p-16285-mopar-68005441aa-pressure-relief-valve-075-18-67l-ram-cummins-aspx","title":"Mopar 68005441AA Pressure Relief Valve 07.5-18 Ram 6.7L Cummins","description":"\u003cp\u003eOne of the most prevalent issues we see causing hard starts, lack of power, and poor fuel economy, is that of a blown or weak pressure relief valve.  The pressure relief valve is a simple....you guessed it....relief valve located in your fuel rail designed to limit rail pressure to avoid damage to your injectors.  Once it  enough rail pressure, it will bleed off and return the fuel back to the injection pump to be recycled back into the system.  Because this is a simple spring valve, it will lose its memory and begin to start bleeding off prematurely, not allowing the rail to build adequate pressure, in turn meaning the injectors are not getting adequate pressure.  Many will take the option to simply block off the relief valve, which definitely works, but it does mean that you are removing a built-in safe guard from the factory.If you're like many and would prefer to reinstall a fresh relief valve, check out this genuine Bosch unit for years of trouble free service. Torque to 70 ft-lbs when installed.\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Mopar | Factory OEM Dodge Ram","offers":[{"title":"Default Title","offer_id":52077098762605,"sku":"MOP-68005441AA","price":1320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/16285.gif?v=1752690178"},{"product_id":"p-7346-ppe-prv-shim-kit-045-10-66l-gm-duramax-aspx","title":"PPE PRV (Pressure Relief Valve) Shim Kit 04.5-10 GM 6.6L Duramax","description":"The shim kit effectively shims the PRV (pressure relief valve) increasing its \"pop off\" pressure, thus reducing fuel being returned to the tank by the PRV. The Release Valve Shim Kit eliminates low fuel pressure rail diagnostic trouble codes (DTC) such as DTC P01093 (low fuel pressure during power regiment), help maintains fuel pressure during full throttle driving.\u003cbr\u003e\u003cbr\u003e","brand":"PPE (Pacific Performance Eng.)","offers":[{"title":"Default Title","offer_id":52077122421101,"sku":"PPE-113072000","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/113072000_release_valve_shim_kit_3000x_24c6a8e8-7d6a-4e41-947f-f5b0c8816e45.jpg?v=1752690255"},{"product_id":"p-ats-pressure-relief-valve-block-off-03-07-ram-59l-cummins","title":"ATS Pressure Relief Valve Block Off 03-07 Ram 5.9L Cummins","description":"\u003cp\u003eAll of the 5.9L Common Rail Cummins feature a relief in the fuel rail which is designed to relieve pressure once it sees roughly 25,000 PSI to avoid damage to the stock injectors. However, most aftermarket tuning is designed to deliver pressure higher than this, causing the higher pressure fuel to not get to the injectors, losing power, and eventually causing the failure of the stock pressure relief valve.\u003c\/p\u003e\n\u003cp\u003eThis simple fuel rail plug will block off the relief valve located on your fuel rail, ensuring that ALL rail pressure is delivered to the injectors, gaining power on the top end.\u003c\/p\u003e","brand":"ATS Diesel Performance","offers":[{"title":"Default Title","offer_id":52077394428269,"sku":"ATS-7050502272","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/7050502272.png?v=1752691234"},{"product_id":"p-ats-pressure-relief-valve-block-off-045-10-gm-66l-duramax","title":"ATS Pressure Relief Valve Block Off 04.5-10 GM 6.6L Duramax","description":"\u003cp\u003eAll of the 2004.5-2010 6.6L Duramax engines feature a relief in the fuel rail which is designed to relieve pressure once it sees roughly 25,000 PSI to avoid damage to the stock injectors. However, most aftermarket tuning is designed to deliver pressure higher than this, causing the higher pressure fuel to not get to the injectors, losing power, and eventually causing the failure of the stock pressure relief valve.\u003c\/p\u003e\n\u003cp\u003eThis simple fuel rail plug will block off the relief valve located on your fuel rail, ensuring that ALL rail pressure is delivered to the injectors, gaining power on the top end.\u003c\/p\u003e","brand":"ATS Diesel Performance","offers":[{"title":"Default Title","offer_id":52077394559341,"sku":"ATS-7050504290","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/7050504290.jpg?v=1752691234"},{"product_id":"p-bosch-pressure-relief-valve-prv-01-04-gm-66l-duramax-lb7","title":"Bosch Pressure Relief Valve (PRV) 01-04 GM 6.6L Duramax LB7","description":"Is your LB7 Duramax getting hard to start or feeling like it doesn't have the power it used to? Its likely that the pressure relief valve located on your Function Block needs to be replaced. This Pressure Relief Valve (PRV) is responsible for controlling high pressure fuel and bleeding off excessive pressure back into the fuel system when warranted. Because the valve is just a simple spring, it can wear out, causing pressure to be relieved too early, and when this happens the function block is unable to build proper pressure to fire the injectors properly (or at all). There are a few ways to check if your PRV needs to be replaced. First, using a scan tool, you can check for actual rail pressure and comparing to desired rail pressure, and if the actual rail pressure is signicantly lower than desired, it may be that your valve needs to be replaced. Further, some will remove the return line located on the valve and start the truck, seeing if fuel is bypassing while not under load, as it shouldnt' be until higher pressures are achieved. If fuel is bypassing, then it needs to be replaced.\u003cbr\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52077452689773,"sku":"BOSCH-1110010036","price":154.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/BOSCH-1110010036-2.jpg?v=1752691428"},{"product_id":"p-bosch-0281006250-pressure-relief-valve-19-22-ram-67l-cummins","title":"Bosch 0281006250 Pressure Relief Valve 19-22 Ram 6.7L Cummins","description":"One of the most prevalent issues we see causing hard starts, lack of power, and poor fuel economy, is that of a blown or weak pressure relief valve. The pressure relief valve is a simple....you guessed it....relief valve located in your fuel rail designed to limit rail pressure to avoid damage to your injectors. Once it builds enough rail pressure, it will bleed off and return the fuel back to the injection pump to be recycled back into the system. Because this is a simple spring valve, it will lose its memory and begin to start bleeding off prematurely, not allowing the rail to build adequate pressure, in turn meaning the injectors are not getting adequate pressure. Many will take the option to simply block off the relief valve, which definitely works, but it does mean that you are removing a built-in safe guard from the factory.If you're like many and would prefer to reinstall a fresh relief valve, check out this genuine Bosch unit for years of trouble free service.","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52077475725677,"sku":"BOSCH-0281006250","price":137.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/0281006250_2.jpg?v=1752691498"},{"product_id":"p-bosch-0281006017-pressure-relief-valve-11-14-ford-67l-powerstroke","title":"Bosch Fuel Pressure Relief Valve 11-19 Ford 6.7L Powerstroke","description":"One of the most prevalent issues we see causing hard starts, lack of power, and poor fuel economy, is that of a blown or weak pressure relief valve. The pressure relief valve is a simple....you guessed it....relief valve located in your fuel rail designed to limit rail pressure to avoid damage to your injectors. Once it builds enough rail pressure, it will bleed off and return the fuel back to the injection pump to be recycled back into the system. Because this is a simple spring valve, it will lose its memory and begin to start bleeding off prematurely, not allowing the rail to build adequate pressure, in turn meaning the injectors are not getting adequate pressure. Many will take the option to simply block off the relief valve, which definitely works, but it does mean that you are removing a built-in safe guard from the factory.If you're like many and would prefer to reinstall a fresh relief valve, check out this genuine Bosch unit for years of trouble free service.","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52077476413805,"sku":"BOSCH-0281006017","price":119.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/0281006017.jpg?v=1752691501"},{"product_id":"bosch-fuel-rail-pressure-relief-valve-prv-11-16-gm-6-6l-duramax-lml","title":"Bosch Fuel Rail Pressure Relief Valve (PRV) 11-16 GM 6.6L Duramax LML","description":"\u003cp\u003eReplace your failed Fuel Rail Pressure Relief Valve (PRV) in your 2011-2016 GM 6.6L Duramax with this genuine BOSCH part.\u003c\/p\u003e\n\u003cp\u003eSay goodbye to poor performance, excessive smoking and rough idle can be a symptom of an inoperative or failing fuel pressure relief valve. This Bosch replacement is engineered to match the factory specs and maintain the OEM function of your vehicle's fuel system.\u003c\/p\u003e\n\u003cp\u003eBosch constructs this valve using the highest quality materials possible to ensure it delivers long and dependable service life. This OE-style replacement features a direct-fit design that installs into the factory location.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":52746595238253,"sku":"BOSCH-0281006019","price":95.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/files\/0281006019_Bosch_1_600x600_a15a8ccb-9b2d-469f-83a4-9a1cacbd56c4.jpg?v=1763579748"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/2487\/2301\/collections\/Bosch_20Pressure_20Relief_20Valve.jpg?v=1755891657","url":"https:\/\/dieselpowerproducts.com\/collections\/pressure_relief_valves.oembed","provider":"Diesel Power Products","version":"1.0","type":"link"}