Nissens 999551 A/C Expansion Valve - Front

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Nissens 999551 A/C Expansion Valve - Front

Brand	Nissens 999551
Position	Front
Refrigerant Type	R134a
Mounting Hardware Included	No
O-ring Quantity	4
O-rings Included	Yes
Fits	Lexus and Toyota · 33 vehicles

OE matching standards. Built for precise refrigerant metering and consistent HVAC performance.

R134A system fitment. Configured for listed air conditioning applications using R134A refrigerant.

O-rings included. Sealing components are supplied for the valve installation.

Cross-references Global Parts Distributors LLC 3411415, UAC EX10154C and 8851502090 for the same application. See all 8.

$54.61Free shipping

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Overview

Nissens 999551 is an A/C expansion valve for R134A systems, built for precise refrigerant control and OE matching performance. It is a fitment-based replacement for select Toyota and Lexus applications, including the Toyota FJ Cruiser, Toyota 4Runner, Lexus GX470, Lexus LX470, and Toyota Land Cruiser.

This Nissens 999551 expansion valve is developed to strict quality standards and validated for pressure performance, tightness, opening behavior, set-point accuracy, and internal finish. O-rings are included, and mounting bolts are supplied whenever applicable.

Key Features

R134A refrigerant type for the listed HVAC applications
O-rings included for sealing at installation points
Developed to OE matching standards for refrigerant metering control
Tested for pressure performance, tightness, opening, set-point setting, and inner finish
Direct-fit replacement for select Toyota and Lexus A/C systems

Fitment Details

Compatible with select Toyota and Lexus HVAC systems using the listed inlet and outlet dimensions. Fits 2007-2014 Toyota FJ Cruiser, N/A; Fits 2003-2009 Toyota 4Runner, N/A; Fits 2004-2009 Lexus GX470, Front; Fits 2002-2007 Lexus LX470, Front; Fits 2002-2007 Toyota Land Cruiser, Front.

Part number 999551 is also referenced in cross applications such as UAC EX10154C and Global Parts Distributors LLC 3411415.

What It Helps Address

Inconsistent A/C refrigerant flow control
Poor cooling performance caused by valve restriction issues
Leaks at the valve sealing points
Improper expansion valve opening or set-point behavior
HVAC service needs on listed Toyota and Lexus models

Installation Notes

Verify refrigerant type, inlet and outlet dimensions, and vehicle fitment before installation. O-rings are included; mounting bolts are not listed as included. Use the vehicle-specific HVAC service procedure and confirm system cleanliness before replacing the valve.

Quality Assurance

Nissens manufactures thermal expansion valves under strict testing and validation controls to match OE performance targets. Part number 999551 is built to support consistent pressure regulation, sealing integrity, and accurate refrigerant metering.

This part fits 33 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Submodel	Liters	Cylinders	Fuel Type	Position	Notes
2014	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2013	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2012	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2011	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2010	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2009	Lexus	GX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2009	Toyota	4Runner	Sport	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2009	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2008	Lexus	GX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2008	Toyota	4Runner	SR5	4.7L	V8	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2008	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2007	Lexus	GX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2007	Lexus	LX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2007	Toyota	4Runner	Sport	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2007	Toyota	FJ Cruiser	Base	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2007	Toyota	Land Cruiser	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2006	Lexus	GX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2006	Lexus	LX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2006	Toyota	4Runner	SR5	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2006	Toyota	Land Cruiser	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2005	Lexus	GX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2005	Lexus	LX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2005	Toyota	4Runner	SR5	4.7L	V8	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2005	Toyota	Land Cruiser	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2004	Lexus	GX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2004	Lexus	LX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2004	Toyota	4Runner	Limited	4.0L	V6	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2004	Toyota	Land Cruiser	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2003	Lexus	LX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2003	Toyota	4Runner	Sport	4.7L	V8	GAS	N/A	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2003	Toyota	Land Cruiser	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2002	Lexus	LX470	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
2002	Toyota	Land Cruiser	Base	4.7L	V8	GAS	Front	Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
No rows match your filter.

Directly replaces or cross-references 8 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Global Parts Distributors LLC — 3411415UAC — EX10154C885150209088515350208851560120885156019044750020104D44750025204D