How to check and replace catalytic converters on 2003 through 2009 Toyota 4Runner?

The catalytic converter is an emission control device in the exhaust system designed to reduce pollutants, with two main types, oxidation catalysts which reduce the content of hydrocarbon and carbon monoxide by supplying oxygen, and reduction catalysts to reduce the oxides of nitrogen by taking away oxygen. V6 models have four converters; they are upstream catalysts located in the exhaust manifolds, and downstream converters located in the front exhaust pipes V8 models have three converters, one of which being a downstream converter situated directly behind the Y-pipe. Checking for a faulty converter needs specific tools and thus if problems are being thinking to exist, one should involve a dealer or an accredited center. Daily and weekly inspection schedules are required for leakage, corrosion and any signs ofphysical injury; if it is plugged the vacuum gauge comes in handy. For replacement, the process includes lifting of the vehicle off the ground with a car lift securely, disconnecting the oxygen sensor connectors, application of a penetrant to the flange nuts of the exhaust, and removing the downstream catalyst separately or the whole assembly of the front exhaust pipe for both. Disassembly is done in a topsy-turvy manner starting with the head followed closely by the gaskets and fasteners; in this process new gaskets and nuts are used while tightening all nuts to the recommended tightness.

Genuine Toyota 4Runner Catalytic Converter

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134 Catalytic Converters found

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Toyota 4Runner Exhaust Manifold
Part Number: 17141-75080
$267.72 MSRP: $383.89
You Save: $116.17 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Manifold, Exhaust
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1999-2001 Toyota 4Runner | LULI, SR5B, SR5V | 4 Cyl 2.7L, 6 Cyl 3.4L | 3RZFE, 5VZFE; RZN180L-GKMSKA, RZN180L-GKPSKA, RZN185L-GKMSKA, RZN185L-GKPSKA, VZN180L-GKPGKA, VZN180L-GKPSKA, VZN180L-GKPZKA, VZN185L-GKMGKA, VZN185L-GKPGKA, VZN185L-GKPSKA, VZN185L-GKPZKA
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Toyota 4Runner Exhaust Manifold Assembly
Part Number: 17150-50050
$723.42 MSRP: $1080.17
You Save: $356.75 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Assembly, Exhaust; Exhaust Manifold
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2009 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
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Toyota 4Runner Right Exhaust Manifold Sub-Assembly
Part Number: 17140-50060
$782.80 MSRP: $1168.82
You Save: $386.02 (34%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Rh; Exhaust Manifold
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2009 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
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Toyota 4Runner Exhaust Manifold Assembly
Part Number: 17150-31250
$638.53 MSRP: $953.42
You Save: $314.89 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Lh; Exhaust Manifold
- Manufacturer Note: *114=*566
- Position: Driver Side
- Replaces: 17150-31070
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2009 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
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Toyota 4Runner Exhaust Manifold Assembly Left Hand
Part Number: 17150-31011
$618.26 MSRP: $923.15
You Save: $304.89 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Lh; Exhaust Manifold
- Manufacturer Note: *115=TOYOTA/03-/Y
- Position: Driver Side
- Replaces: 17150-31010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2005 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Exhaust Manifold
Part Number: 17141-75030
$276.65 MSRP: $396.69
You Save: $120.04 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Exhaust
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1996-2001 Toyota 4Runner | LULI, SR5B, SR5V | 4 Cyl 2.7L, 6 Cyl 3.4L | 3RZFE, 5VZFE; RZN180L-GKMSKA, RZN180L-GKPSKA, RZN185L-GKMSKA, RZN185L-GKPSKA, VZN180L-GKPGKA, VZN180L-GKPSKA, VZN180L-GKPZKA, VZN185L-GKMGKA, VZN185L-GKPGKA, VZN185L-GKPSKA, VZN185L-GKPZKA
View related parts
Toyota 4Runner Right Exhaust Manifold Sub-Assembly
Part Number: 17140-31011
$618.26 MSRP: $923.15
You Save: $304.89 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Rh; Exhaust Manifold
- Manufacturer Note: *115=TOYOTA/03-/Y
- Position: Passenger Side
- Replaces: 17140-31010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2005 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Front Exhaust Pipe Assembly
Part Number: 17410-62130
$1205.78 MSRP: $1649.02
You Save: $443.24 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Converter & Pipe, Front Pipe
- Manufacturer Note: CALIFORNIA SPEC
- Position: Front
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1998-2002 Toyota 4Runner | LULI, SR5B, SR5V | 4 Cyl 2.7L, 6 Cyl 3.4L | 3RZFE, 5VZFE; RZN180L-GKMSKA, RZN180L-GKPSKA, RZN185L-GKMSKA, RZN185L-GKPSKA, VZN180L-GKPGKA, VZN180L-GKPSKA, VZN180L-GKPZKA, VZN185L-GKMGKA, VZN185L-GKPGKA, VZN185L-GKPSKA, VZN185L-GKPZKA
View related parts
Toyota 4Runner Exhaust Manifold
Part Number: 17141-75130
$267.72 MSRP: $383.89
You Save: $116.17 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Exhaust; Catalytic Converter
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2012 Toyota 4Runner | 4 Cyl 2.7L, 6 Cyl 4.0L | 1GRFE, 2TRFE; GRN280L-GKAGKA, GRN285L-GKAGKA, TRN280L-GKPGKA, TRN285L-GKPGKA
View related parts
Toyota 4Runner Right Exhaust Manifold Sub-Assembly
Part Number: 17140-31250
$693.34 MSRP: $1035.26
You Save: $341.92 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Rh; Exhaust Manifold
- Manufacturer Note: *114=*565
- Position: Passenger Side
- Replaces: 17140-31070
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2009 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Right Exhaust Manifold Sub-Assembly
Part Number: 17104-50180
$640.43 MSRP: $956.25
You Save: $315.82 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Rh; Exhaust Manifold
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2005 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Left Exhaust Manifold Sub-Assembly
Part Number: 17105-50170
$571.14 MSRP: $852.79
You Save: $281.65 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Lh; Exhaust Manifold
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2005 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Exhaust Manifold
Part Number: 17141-62110
$226.30 MSRP: $324.50
You Save: $98.20 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Exhaust
- Replaces: 17141-62100
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1998-2002 Toyota 4Runner | LULI, SR5B, SR5V | 4 Cyl 2.7L, 6 Cyl 3.4L | 3RZFE, 5VZFE; RZN180L-GKMSKA, RZN180L-GKPSKA, RZN185L-GKMSKA, RZN185L-GKPSKA, VZN180L-GKPGKA, VZN180L-GKPSKA, VZN180L-GKPZKA, VZN185L-GKMGKA, VZN185L-GKPGKA, VZN185L-GKPSKA, VZN185L-GKPZKA
View related parts
Toyota 4Runner Right Exhaust Manifold Sub-Assembly
Part Number: 17140-31070
$693.34 MSRP: $1035.26
You Save: $341.92 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assy, Exhaust, Rh
- Position: Passenger Side
- Replaced by: 17140-31250
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2007 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Exhaust Manifold Assembly Left Hand
Part Number: 17150-31590
$620.71 MSRP: $926.81
You Save: $306.10 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assembly, Exhaust, Lh; Catalytic Converter, Exhaust Manifold
- Manufacturer Note: MEXICO SPEC
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2013 Toyota 4Runner | 4 Cyl 2.7L, 6 Cyl 4.0L | 1GRFE, 2TRFE; GRN280L-GKAGKA, GRN285L-GKAGKA, TRN280L-GKPGKA, TRN285L-GKPGKA
View related parts
Toyota 4Runner Front Exhaust Pipe Assembly
Part Number: 17410-31F60
$898.10 MSRP: $1228.23
You Save: $330.13 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assembly, Exhaust, Front; Converter & Pipe, Front Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2012-2020 Toyota 4Runner | 4 Cyl 2.7L, 6 Cyl 4.0L | 1GRFE, 2TRFE; GRN280L-GKAGKA, GRN285L-GKAGKA, TRN280L-GKPGKA, TRN285L-GKPGKA
View related parts
Toyota 4Runner Right Exhaust Manifold Sub-Assembly
Part Number: 17140-31590
$623.61 MSRP: $931.13
You Save: $307.52 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Sub-Assembly, Exhaust, Rh; Catalytic Converter, Exhaust Manifold
- Manufacturer Note: MEXICO SPEC
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2013 Toyota 4Runner | 4 Cyl 2.7L, 6 Cyl 4.0L | 1GRFE, 2TRFE; GRN280L-GKAGKA, GRN285L-GKAGKA, TRN280L-GKPGKA, TRN285L-GKPGKA
View related parts
Toyota 4Runner Front Exhaust Pipe Assembly
Part Number: 17410-50450
$1185.51 MSRP: $1621.29
You Save: $435.78 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Converter & Pipe, Front Pipe
- Position: Front
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2004-2009 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Front Exhaust Pipe Assembly
Part Number: 17410-31380
$1102.63 MSRP: $1507.95
You Save: $405.32 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assy, Exhaust, Front; Converter & Pipe, Front Pipe
- Manufacturer Note: *114=TOYOTA/T97/Y
- Position: Front
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2005 Toyota 4Runner | Limited, SR5 | 6 Cyl 4.0L, 8 Cyl 4.7L | 1GRFE, 2UZFE; GRN210L-GKAGKA, GRN210L-GKAZKA, GRN210L-GKPGKA, GRN210L-GKPZKA, GRN215L-GKAGKA, GRN215L-GKAZKA, GRN215L-GKPGKA, GRN215L-GKPZKA, UZN210L-GKAGKA, UZN210L-GKAZKA, UZN215L-GKAGKA, UZN215L-GKAZKA
View related parts
Toyota 4Runner Exhaust Manifold
Part Number: 17141-62080
$208.21 MSRP: $298.56
You Save: $90.35 (31%)
Product Specifications
- Other Name: Manifold, Exhaust
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1996-2001 Toyota 4Runner | LULI, SR5B, SR5V | 4 Cyl 2.7L, 6 Cyl 3.4L | 3RZFE, 5VZFE; RZN180L-GKMSKA, RZN180L-GKPSKA, RZN185L-GKMSKA, RZN185L-GKPSKA, VZN180L-GKPGKA, VZN180L-GKPSKA, VZN180L-GKPZKA, VZN185L-GKMGKA, VZN185L-GKPGKA, VZN185L-GKPSKA, VZN185L-GKPZKA

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Toyota 4Runner Catalytic Converter

The Toyota 4Runner Catalytic Converter converts the toxic exhaust gases into less toxic materials through the use of catalyst materials contained in a honeycomb substrate. The Catalytic Converter is located in the exhaust system of the 4Runner SUV by Toyota where it directs carbon monoxide, hydrocarbons and nitrogen oxides through surfaces that have platinum, palladium and rhodium, converting them to water, carbon dioxide, and nitrogen. The constant exposure of the exhaust to exhaust heat makes the Catalytic Converter prone to overheating or clogging in case the engine misfires, burns with a rich fuel mixture or even spills oil or coolant, which can melt or coat the internal honeycomb and decrease the conversion efficiency. A broken Catalytic Converter may lead to a limited flow of exhausts, low performance of the vehicle, rattling sounds, a lit check engine light, and unsuccessful emissions tests. In Toyota 4Runner, the converter will wear out or be poisoned by leaded additives, thus replacement is recommended to enable the vehicle to pass the smog tests. Maintaining the Catalytic Converter in the right condition is beneficial to the entire system of emissions of the 4Runner and keeps Toyota emissions regulation when the car is applied on a daily basis.

If you are in demand for superior quality and affordable OEM Toyota 4Runner Catalytic Converter, then shop with us! We own a wide range of the reduced-priced genuine Toyota 4Runner Catalytic Converter. You can purchase in confidence as all parts come with a manufacturer's warranty. Any issues with our products? No need to worry as we have a hassle-free return policy to guide you every step of the way.

Toyota 4Runner Catalytic Converter Parts Questions & Experts Answers

Exhaust Manifold Assembly
17150-31250
Q: How to check and replace catalytic converters on 2003 through 2009 Toyota 4Runner?
A:
The catalytic converter is an emission control device in the exhaust system designed to reduce pollutants, with two main types, oxidation catalysts which reduce the content of hydrocarbon and carbon monoxide by supplying oxygen, and reduction catalysts to reduce the oxides of nitrogen by taking away oxygen. V6 models have four converters; they are upstream catalysts located in the exhaust manifolds, and downstream converters located in the front exhaust pipes V8 models have three converters, one of which being a downstream converter situated directly behind the Y-pipe. Checking for a faulty converter needs specific tools and thus if problems are being thinking to exist, one should involve a dealer or an accredited center. Daily and weekly inspection schedules are required for leakage, corrosion and any signs ofphysical injury; if it is plugged the vacuum gauge comes in handy. For replacement, the process includes lifting of the vehicle off the ground with a car lift securely, disconnecting the oxygen sensor connectors, application of a penetrant to the flange nuts of the exhaust, and removing the downstream catalyst separately or the whole assembly of the front exhaust pipe for both. Disassembly is done in a topsy-turvy manner starting with the head followed closely by the gaskets and fasteners; in this process new gaskets and nuts are used while tightening all nuts to the recommended tightness.

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