Exhaust for 1998 INFINITI QX4
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![81751 - Exhaust: CalCat CARB Direct Fit Catalytic Converter 1.995" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/4f71cba0a6e30fd9a2cd944a0e0e9056.webp "81751 - Exhaust: CalCat CARB Direct Fit Catalytic Converter 1.995" Outlet (OD) for Walker Exhaust")
CalCat CARB Direct Fit Catalytic Converter 1.995" Outlet (OD)
Walker Exhaust
81751
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Direct-Fit Catalytic Converters are...
Positions: Front Left, Left
$994.37
Fits Your Vehicle
Federal / EPA Catalytic Converter - Direct Fit
AP Exhaust
641133
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency while our latest...
Positions: Front Left
$306.85
Fits Your Vehicle
Oxygen Sensor
DELPHI
ES10456
Delphi's ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We...
Positions: Front Right
$59.80
Fits Your Vehicle
Pre-Converter - Not CARB Compliant
Dorman
679-509
This catalytic converter is precision-engineered to match the original equipment fit and function on specific vehicle years, makes and...
Positions: Front Left
$320.68
Fits Your Vehicle
Pre-Converter - Not CARB Compliant
Dorman
679-503
This catalytic converter is precision-engineered to match the original equipment fit and function on specific vehicle years, makes and...
Positions: Front Right
$246.71
Fits Your Vehicle
Oxygen Sensor
DELPHI
ES10686
Delphi's ever growing portfolio of high quality vehicle sensors are backed by stringent OE development and product validation methods. We...
Positions: Front Left
$66.23
Fits Your Vehicle
Oxygen Sensor 3 Wire, Direct Fit, Heated, Wire Length: 22.83
Denso
234-3087
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision...
Positions: Upstream Right
$50.01
Fits Your Vehicle
![53109 - : Exhaust Pipe 1.75" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/2a44ff45bdf8099f64e407989ed7d548.webp "53109 - : Exhaust Pipe 1.75" Outlet (OD) for Walker Exhaust")
Exhaust Pipe 1.75" Outlet (OD)
Walker Exhaust
53109
Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a...
Exhaust Manifold Kit - Includes Required Gaskets And Hardware
Dorman
674-432
This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on...
Positions: Right
$84.86
Fits Your Vehicle
![18964 - : SoundFX Direct Fit Exhaust Muffler 1.75" Inlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/2e9e66c7267f43ecbf721edc6a0bcfbd.webp "18964 - : SoundFX Direct Fit Exhaust Muffler 1.75" Inlet (ID) for Walker Exhaust")
SoundFX Direct Fit Exhaust Muffler 1.75" Inlet (ID)
Walker Exhaust
18964
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX® direct-fit mufflers deliver quality...
Oxygen Sensor
Spectra Premium
OS5298
Innovative
engineering, manufacturing technology and quality control ensure that Spectra
Premium...
Positions: Upstream Left
Fits Your Vehicle
Federal / EPA Catalytic Converter - Universal OBDII
AP Exhaust
608204
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency while our latest...
Positions: Rear Left, Rear Right
Fits Your Vehicle
Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 36.22
Denso
234-4704
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision...
Positions: Downstream Right
$52.19
Fits Your Vehicle
![53111 - : Quiet-Flow SS Direct Fit Exhaust Muffler Assembly 2" Inlet (OD) 2" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/f5a90a8bff071a10732f2eb8f80e8bcb.webp "53111 - : Quiet-Flow SS Direct Fit Exhaust Muffler Assembly 2" Inlet (OD) 2" Outlet (OD) for Walker Exhaust")
Quiet-Flow SS Direct Fit Exhaust Muffler Assembly 2" Inlet (OD) 2" Outlet (OD)
Walker Exhaust
53111
Combining the only broad-market stainless-steel body construction with a direct fit OE-style replacement, Walker® Quiet-Flow® SS muffler...
$111.69
Oxygen Sensor
Spectra Premium
OS5147
Innovative
engineering, manufacturing technology and quality control ensure that Spectra
Premium...
Positions: Upstream Right
Fits Your Vehicle
Exhaust Manifold Kit - Includes Required Gaskets And Hardware
Dorman
674-431
This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on...
Positions: Left
$105.85
Fits Your Vehicle
Oxygen Sensor 4 Wire, Direct Fit, Heated, Wire Length: 50.39
Denso
234-4703
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision...
Positions: Downstream Left
$55.14
Fits Your Vehicle
Exhaust Resonator and Pipe Assembly
BRExhaust
760-715
BRExhaust direct-fit exhaust resonator and pipe assemblies are designed to install easily and help you retain the OE exhaust sound you...
Positions: Left
$107.08
Fits Your Vehicle
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