How to remove and install Intake Manifold in 3.0L and 3.3L V6 engine on Toyota Highlander?

To remove the engine cover, relieve the fuel system pressure and disconnect the cable from the negative terminal of the battery, then remove the oil filler cap, followed by the three fasteners and the clip securing the engine cover. For upper intake manifold removal, which provides access to the rear valve cover, rear cylinder head, and sensors, on 2004 and later Highlander and all Lexus models, remove the top cowl/ventilation cover, windshield wiper arms, and windshield wiper motor, then the lower cowl cover, and disconnect the PCV hose from the valve cover. For spark plug removal, disconnect the ground strap, ACIS system components, electrical connectors, and vacuum lines, labeling each connector for reassembly, then remove the throttle body mounting nuts, unbolt the upper intake manifold brace(s), and detach the upper intake manifold from the throttle body and lower intake manifold. For other procedures, disconnect the ground strap, ACIS system components, electrical connectors, vacuum lines, and coolant bypass hoses, clamping or plugging coolant hoses to prevent spillage, while the throttle body can remain attached unless cleaning or gasket service is needed. Remove the air filter housing and air intake ducts, disconnect the accelerator cable or electronic throttle control system connector, unbolt the upper intake manifold brace(s) and throttle body brace, then lift the upper intake manifold/throttle body assembly from the engine compartment. For the lower intake manifold, drain the coolant, disconnect electrical connectors from the fuel injectors, detach the fuel line, disconnect heater hoses, and remove the mounting bolts and nuts in reverse order of tightening sequence, ensuring not to pry between gasket mating surfaces. Replace the water transfer hose if the intake manifold is removed. For installation, scrape off old gasket material and sealant, clean mating surfaces, install new gaskets, position the manifold, and tighten the nuts/bolts in the correct sequence. Finally, install remaining parts in reverse order of removal, use a new gasket between the lower and upper intake manifolds, refill the cooling system, run the engine, and check for leaks.

Genuine Toyota Highlander Intake Manifold

Engine Intake Manifold

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18 Intake Manifolds found

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Toyota Highlander Manifold Assembly, INTAK
Part Number: 17120-F0020
$339.21 MSRP: $499.32
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Product Specifications
- Other Name: Intake Manifold
- Replaces: 17120-25020
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2024 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, T24AFTS; AXUH70L-ARXGHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Toyota Highlander Manifold Assembly, INTAK
Part Number: 17120-0V040
$733.04 MSRP: $1079.04
You Save: $346.00 (33%)
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Product Specifications
- Other Name: Manifold, Intake; Intake Manifold
- Manufacturer Note: *212
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2011-2013 Toyota Highlander | Limited, Medium, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASU40L-ARTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA
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Toyota Highlander MANIFOLD ASSY, INTAK
Part Number: 17120-F0100
$325.60 MSRP: $466.89
You Save: $141.29 (31%)
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Product Specifications
- Other Name: Intake Manifold
- Manufacturer Note: (L)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2022-2024 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Toyota Highlander Manifold, Intake
Part Number: 17111-31141
$379.56 MSRP: $558.71
You Save: $179.15 (33%)
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Product Specifications
- Other Name: Intake Manifold
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2017 Toyota Highlander | Grande, Limited, Medium, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS, 3MZFE; ASU40L-ARTNKA, ASU40L-BRTNKA, ASU50L-ARTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU48L-BRXGKA, GVU48L-BRXNKA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
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Toyota Highlander Manifold, Intake
Part Number: 17111-0P040
$391.76 MSRP: $576.67
You Save: $184.91 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Intake Manifold
- Manufacturer Note: (L)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander MANIFOLD ASSY, INTAK
Part Number: 17120-25080
$449.28 MSRP: $661.34
You Save: $212.06 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Intake Manifold
- Manufacturer Note: (J)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2022-2024 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Toyota Highlander Manifold, Intake
Part Number: 17111-0P060
$282.33 MSRP: $404.84
You Save: $122.51 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Intake Manifold
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2023 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS, A25AFXS, T24AFTS; ASU50L-ARTNKA, AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Toyota Highlander Manifold Assembly, INTAK
Part Number: 17120-25020
$339.21 MSRP: $499.32
You Save: $160.11 (33%)
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Product Specifications
- Other Name: Intake Manifold
- Manufacturer Note: *489,MARK17120-25020,*636
- Replaced by: 17120-F0020
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2020-2024 Toyota Highlander | 4 Cyl 2.4L, 4 Cyl 2.5L, 6 Cyl 3.5L | 2GRFKS, A25AFXS, T24AFTS; AXUH70L-ARXGHA, AXUH70L-ARXMHA, AXUH70L-ARXNHA, AXUH78L-ARXGHA, AXUH78L-ARXMHA, AXUH78L-ARXNHA, GSU70L-ARZGHA, GSU70L-ARZMHA, GSU70L-ARZNHA, GSU70L-ARZSHA, GSU75L-ARZGHA, GSU75L-ARZMHA, GSU75L-ARZNHA, GSU75L-ARZSHA, TXUA70L-ARZGTA, TXUA70L-ARZMTA, TXUA70L-ARZNTA, TXUA70L-ARZSTA, TXUA75L-ARZGTA, TXUA75L-ARZMTA, TXUA75L-ARZNTA, TXUA75L-ARZSTA
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Toyota Highlander Manifold, Intake
Part Number: 17111-31220
$415.15 MSRP: $611.11
You Save: $195.96 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Intake Manifold
- Manufacturer Note: (J)
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2017 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Manifold Assembly, INTAK
Part Number: 17120-0V050
$710.42 MSRP: $1045.74
You Save: $335.32 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Manifold, Intake; Intake Manifold
- Replaced by: 17120-36060
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Manifold, Intake
Part Number: 17101-20070
$307.97 MSRP: $441.61
You Save: $133.64 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Intake Manifold
- Manufacturer Note: (J)
- Replaces: 17101-0A050
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2011 Toyota Highlander | Grande, Limited, Sport, STD | 4 Cyl 2.4L, 4 Cyl 2.7L, 6 Cyl 3.0L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 1MZFE, 2AZFE, 2GRFE, 2GRFXE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, ASU40L-BRTNKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA, MHU23L-BRXNKA, MHU23L-BWXNKA, MHU28L-BRXNKA, MHU28L-BWXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
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Toyota Highlander Manifold, Intake
Part Number: 17111-0P030
$380.12 MSRP: $559.53
You Save: $179.41 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Intake Manifold
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2010-2013 Toyota Highlander | Limited, Medium, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE; ASU40L-ARTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA
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Toyota Highlander Manifold, Intake
Part Number: 17120-28130
$416.48 MSRP: $613.06
You Save: $196.58 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 17120-28131
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2007 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Manifold Assembly, INTAK
Part Number: 17120-36060
$710.42 MSRP: $1045.74
You Save: $335.32 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Intake
- Replaces: 17120-0V050
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
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Toyota Highlander Manifold Assembly, INTAK
Part Number: 17120-31070
$417.16 MSRP: $614.07
You Save: $196.91 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Intake; Intake Manifold
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2016-2019 Toyota Highlander | 4 Cyl 2.7L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFKS, 2GRFXE, 2GRFXS; ASU50L-ARTNKA, GSU50L-ARTGKA, GSU50L-ARTMKA, GSU50L-ARTNKA, GSU50L-ARZGHA, GSU50L-ARZMHA, GSU50L-ARZNHA, GSU55L-ARTGKA, GSU55L-ARTMKA, GSU55L-ARTNKA, GSU55L-ARZGHA, GSU55L-ARZMHA, GSU55L-ARZNHA, GVU58L-ARXGHA, GVU58L-ARXGKA, GVU58L-ARXMHA, GVU58L-ARXMKA, GVU58L-ARXNHA, GVU58L-ARXNKA
View related parts
Toyota Highlander Manifold, Intake
Part Number: 17120-28040
$424.64 MSRP: $625.07
You Save: $200.43 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 17120-28041
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2004 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA
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Toyota Highlander Manifold Assembly, INTAK
Part Number: 17120-36030
$758.56 MSRP: $1116.59
You Save: $358.03 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold, Intake; Intake Manifold
- Manufacturer Note: *107
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2008-2013 Toyota Highlander | Grande, Limited, Medium, Sport, STD | 4 Cyl 2.7L, 6 Cyl 3.3L, 6 Cyl 3.5L | 1ARFE, 2GRFE, 2GRFXE, 3MZFE; ASU40L-ARTNKA, ASU40L-BRTNKA, GSU40L-ARAGKA, GSU40L-ARAMKA, GSU40L-ARANKA, GSU40L-ARASKA, GSU40L-BRAGKA, GSU40L-BRAMKA, GSU40L-BRANKA, GSU40L-BRASKA, GSU45L-ARAGKA, GSU45L-ARAMKA, GSU45L-ARANKA, GSU45L-ARASKA, GSU45L-BRAGKA, GSU45L-BRAMKA, GSU45L-BRANKA, GSU45L-BRASKA, GVU48L-BRXGKA, GVU48L-BRXNKA, MHU48L-BRXMKA, MHU48L-BRXNKA
View related parts
Toyota Highlander Manifold, Intake
Part Number: 17101-20031
$301.84 MSRP: $432.82
You Save: $130.98 (31%)
Product Specifications
- Other Name: Intake Manifold
- Manufacturer Note: (J)
- Replaces: 17101-20030, 17101-0A030
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2001-2004 Toyota Highlander | 4 Cyl 2.4L, 6 Cyl 3.0L, 6 Cyl 3.3L | 1MZFE, 2AZFE, 3MZFE; ACU20L-BRPNKA, ACU20L-BWPNKA, ACU25L-BRPNKA, ACU25L-BWPNKA, MCU20L-BWPNKA, MCU23L-BRANKA, MCU23L-BWANKA, MCU25L-BWPNKA, MCU28L-BRANKA, MCU28L-BWANKA

Toyota Highlander Intake Manifold

If you are in demand for superior quality and affordable OEM Toyota Highlander Intake Manifold, then shop with us! We own a wide range of the reduced-priced genuine Toyota Highlander Intake Manifold. 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 Highlander Intake Manifold Parts Questions & Experts Answers

Manifold, Intake
17101-20031
Q: How to remove and install Intake Manifold in 3.0L and 3.3L V6 engine on Toyota Highlander?
A: To remove the engine cover, relieve the fuel system pressure and disconnect the cable from the negative terminal of the battery, then remove the oil filler cap, followed by the three fasteners and the clip securing the engine cover. For upper intake manifold removal, which provides access to the rear valve cover, rear cylinder head, and sensors, on 2004 and later Highlander and all Lexus models, remove the top cowl/ventilation cover, windshield wiper arms, and windshield wiper motor, then the lower cowl cover, and disconnect the PCV hose from the valve cover. For spark plug removal, disconnect the ground strap, ACIS system components, electrical connectors, and vacuum lines, labeling each connector for reassembly, then remove the throttle body mounting nuts, unbolt the upper intake manifold brace(s), and detach the upper intake manifold from the throttle body and lower intake manifold. For other procedures, disconnect the ground strap, ACIS system components, electrical connectors, vacuum lines, and coolant bypass hoses, clamping or plugging coolant hoses to prevent spillage, while the throttle body can remain attached unless cleaning or gasket service is needed. Remove the air filter housing and air intake ducts, disconnect the accelerator cable or electronic throttle control system connector, unbolt the upper intake manifold brace(s) and throttle body brace, then lift the upper intake manifold/throttle body assembly from the engine compartment. For the lower intake manifold, drain the coolant, disconnect electrical connectors from the fuel injectors, detach the fuel line, disconnect heater hoses, and remove the mounting bolts and nuts in reverse order of tightening sequence, ensuring not to pry between gasket mating surfaces. Replace the water transfer hose if the intake manifold is removed. For installation, scrape off old gasket material and sealant, clean mating surfaces, install new gaskets, position the manifold, and tighten the nuts/bolts in the correct sequence. Finally, install remaining parts in reverse order of removal, use a new gasket between the lower and upper intake manifolds, refill the cooling system, run the engine, and check for leaks.