2003 Nissan Altima Exhaust Headers & Manifolds
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MagnaFlow®OEM Grade Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, OEM Grade Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by MagnaFlow®. Primary Tubing Diameter: 1.5". Collector Outlet Diameter: 5". Color: Silver. Header Coating: Uncoated. If your car...Reduces harmful emissionsPhysically part of the exhaust header/manifold assembly$1,378.00 - Dorman®Cast Iron Natural Exhaust ManifoldNissan Altima 3.5L 2003, Natural Cast Iron Exhaust Manifold by Dorman®. Color: Natural. Header Coating: Uncoated. This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original...Ideal replacement - this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehiclesReliable construction - durable materials resist warping, cracking and leaking for long-lasting performance$164.93 - $193.06
- AP Exhaust®Stainless Steel Direct Fit Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Stainless Steel Direct Fit Exhaust Manifold with Integrated Catalytic Converter by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this...5-year / 50,000-mile warranty on converterSpecifically engineered for Manifold Converter equipped vehicles$569.02 - $655.70
- ATP®Cast Iron Natural Exhaust ManifoldNissan Altima 3.5L 2003, Natural Cast Iron Exhaust Manifold by ATP®. Color: Natural. Header Coating: Uncoated. ATP Graywerks Exhaust Manifolds are a high quality OE replacement alternative. Each manifold is developed off of the original...Manufactured to OE design ensuring manifold will line up and flow like the original unitHigh grade metallurgy resists fatigue cracking and breakage$166.30 - $411.22
- Davico®Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Exhaust Manifold with Integrated Catalytic Converter by Davico®. Position: Front. This product by Davico will be a great solution to replace your failed or damaged catalytic converter. Once your stock cat fails...Helps your vehicle emit harmless gasesDirect OEM replacement$30.52 - $299.20
- Walker®CalCat™ Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, CalCat™ Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by Walker®. Position: Front. This component is constructed for your vehicle’s specific emissions requirements and designed to meet...Constructed to meet your vehicle’s specific emissions requirementsDirect fit design$920.18
- Dorman®Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Exhaust Manifold with Integrated Catalytic Converter by Dorman®. More like a complete kit than a single part, many of the Exhaust Manifolds include gaskets and hardware for a complete installation. Since this...Includes heat-shield for protection of hoses, wiring, and other engine componentsConstruction protects against warping and/or cracking$407.55 - $888.07
- iD Select®ECO III Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, ECO III Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by iD Select®. Position: Front. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select....Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$572.89
- TRQ®Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Exhaust Manifold with Integrated Catalytic Converter by TRQ®. Position: Front. Made with quality in mind, this high-grade TRQ exhaust manifold fits right away without any trouble. It is built using the latest...Intended to bring your vehicle back to its original gloryBudget-friendly alternative to the OEM part$158.95
- Dorman®Exhaust Manifold Hardware KitNissan Altima 2003, Exhaust Manifold Hardware Kit by Dorman®. Dorman manifold bolt and spring kits are just what you need to secure the front flange. Dorman offers products like fasteners and solutions to keep your vehicle running its...Direct replacement for a proper fitBuilt to Last$12.24 - $15.58
- iD Select®ECO III Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, ECO III Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by iD Select®. Position: Front. Swap out your worn-out or malfunctioning part with this top-notch exhaust product from iD Select....Direct OEM replacement for your malfunctioning exhaust partMade to deliver the ultimate in quality, reliability, and value$572.89
- Walker®Ultra™ Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Ultra™ Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by Walker®. Position: Front. Walker is an OE supplier to many major nameplate vehicle manufacturers. Trust Walker, an industry...Constructed to meet your vehicle’s specific emissions requirementsDesigned to meet EPA regulations$394.85
- Walker®Exhaust Spring Bolt KitNissan Altima 2.5L 2003, Exhaust Spring Bolt Kit by Walker®. With their extensive selection of accessories and hardware for the exhaust system, Walker will provide you with everything needed to do the complete exhaust job. When you...Makes installation quick and easyOptimal OE-style fit and quality$15.70
- MagnaFlow®Heavy Metal Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Heavy Metal Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by MagnaFlow®. Primary Tubing Diameter: 1.5". Collector Outlet Diameter: 5". Color: Silver. Header Coating: Uncoated. If your car...Reduces harmful emissionsPhysically part of the exhaust header/manifold assembly$1,102.00
- Davico®Exhaust ManifoldNissan Altima 3.5L 2003, Exhaust Manifold by Davico®. Position: Rear. This product by Davico will be a great solution to replace your failed or damaged exhaust manifold. Once your stock cat fails to perform its job, replacement is the...Helps your vehicle emit harmless gasesDirect OEM replacement$124.21
- CATCO®Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by CATCO®. Position: Front. Designed and manufactured with innovative fabrication methods, high-tech materials, and advanced coating, this...Packed with the latest technological advancementsWill surpass your expectations for performance$698.08
- MagnaFlow®Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L with LEV1 Standard / ULEV Standard, Engine Family # 3NSXV02.5D5A 2003, Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by MagnaFlow®. Position: Front. Primary Tubing Diameter: 1.5". Collector...Made to provide unequaled quality and reliabilityMade with the use of the latest technologies$1,038.00
- ATP®Stainless Steel Natural Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, Natural Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by ATP®. Color: Natural. Header Coating: Uncoated. ATP Graywerks Exhaust Manifold-Converters provide a tested and proven solution to...Engineered as direct OE replacement ensuring manifold will line up and flow like the original unitHigh grade steel and precious metals resist fatigue and provide long lasting reliable catalyst performance$360.09
- Eastern Catalytic®ECO III Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2.5L 2003, ECO III Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by Eastern Catalytic®. Position: Front. If you need to replace your failed or damaged manifold, this product is the right choice....Direct OEM replacementConverts harmful engine emissions to less dangerous gases and water vapor$548.43
- BRExhaust®Stainless Steel Exhaust Manifold with Integrated Catalytic ConverterNissan Altima 2003, Stainless Steel Exhaust Manifold with Integrated Catalytic Converter by BRExhaust®. If you’re in need of a replacement catalytic converter, you can’t do better than BRExhaust. They’re a leading supplier to...Constructed to meet your vehicle’s specific emissions requirementsRadial flow concept allows for an even distribution of the gas flow in the converter for the optimal conversion of harmful gases$245.49 - $477.59
- Original (OEM)Exhaust PartsThe exhaust system is vital to your engine's health and performance since it is responsible for carrying exhaust gases away from the vehicle. The system has many parts connecting it to the engine. All of them perform a special function...
- Nissan OEExhaust System - Exhaust ComponentsNissan Altima 2003, Exhaust System - Exhaust Components by Nissan OE. Rely on superior-grade Nissan OE parts to maintain your Nissan and keep it in like-new condition for a long time. Made to strict standards of quality using innovative...Genuine Nissan OEM part that offers superior quality and fitmentEngineered and tested to meet all Nissan standards$5.53 - $751.53
- Nissan OEExhaust System - Exhaust Components (2.5L)Nissan Altima 2.5L 2003, Exhaust System - Exhaust Components by Nissan OE. Rely on superior-grade Nissan OE parts to maintain your Nissan and keep it in like-new condition for a long time. Made to strict standards of quality using...Genuine Nissan OEM part that offers superior quality and fitmentEngineered and tested to meet all Nissan standards$5.53 - $1,209.43
- Nissan OEExhaust System - ManifoldNissan Altima 2003, Exhaust System - Manifold by Nissan OE. Rely on superior-grade Nissan OE parts to maintain your Nissan and keep it in like-new condition for a long time. Made to strict standards of quality using innovative technology...Genuine Nissan OEM part that offers superior quality and fitmentEngineered and tested to meet all Nissan standards$5.53 - $751.53
- Nissan OEExhaust System - Manifold (2.5L)Nissan Altima 2.5L 2003, Exhaust System - Manifold by Nissan OE. Rely on superior-grade Nissan OE parts to maintain your Nissan and keep it in like-new condition for a long time. Made to strict standards of quality using innovative...Genuine Nissan OEM part that offers superior quality and fitmentEngineered and tested to meet all Nissan standards$5.53 - $1,209.43
- Fel-Pro®Exhaust Manifold Gasket SetNissan Altima 2003, Exhaust Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the gaskets...Ensures reliable sealing performanceMade using advanced technologies and molded rubber chemistry$7.66 - $8.88
- AP Exhaust®Exhaust Manifold GasketNissan Altima 2.5L 2003, Exhaust Manifold Gasket by AP Exhaust®. Today’s exhaust performance market continues to cover a broad spectrum of vehicles. The unique nature of this market is that a product demand is not based on vehicle age...Made from first-rate materialsEnsures outstanding durability$7.19
- Beck Arnley®Exhaust Manifold Gasket SetNissan Altima 2003, Exhaust Manifold Gasket Set by Beck Arnley®. When investing in this superior product by Beck Arnley, expect to get the exact OEM look, function, and fit. The product was developed to stringent factory specifications...OE quality products from top original equipmentTop quality materials$7.72 - $15.74
- Apex Auto®Exhaust Manifold Gasket SetNissan Altima 2003, Exhaust Manifold Gasket Set by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.57 - $6.83
- Nippon Reinz®Exhaust Manifold GasketNissan Altima 2.5L 2003, Exhaust Manifold Gasket by Nippon Reinz®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and legal reasons, but before you...OE quality partsDirect Fit$10.64
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