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Generator Belt Tensioner Pulley 16603-31050 for Toyota 4RUNNER

Name: Generator Belt Tensioner 16603-31050 for Toyota 4RUNNER
Brand: Lexus
SKU: 1660331050
Price: 15.31 USD
Availability: InStock

1660331050 - Engine parts

BRAND

Toyota

PART NUMBER

1660331050

GROUP NAME

Engine parts - Chains, Belts & Pulleys - Engine Pulleys

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Brand	Longtop Supply Quote	Action
FAW Toyota	$15.31	Check Better Price
GAC Toyota	$15.88	Check Better Price
Imported Toyota	$15.92	Check Better Price
Lexus	$15.92	Check Better Price

Replacements

Alternative OE numbers related to this product.

Brand	Original OE	Replacement OE
-	1660331050	166030E010

Compatible Models

Vehicle models currently mapped to this OE part.

Show all 115 mapped vehicle models

Filter By Brand:

#	Brand	Model
1	Lexus	Lexus - General area - LEXUS GX400/460 - 200911 - GRJ158,URJ150
2	Lexus	Lexus - General area - LEXUS LS500/500H/350 - 201710 - GSF50,GVF50,VXFA50
3	Lexus	Lexus - Europe - LEXUS LS SERIES - 201710 - GSF50,GVF5#,VXFA55
4	Toyota	Toyota - General area - 4RUNNER - 200211 - 200908 - GRN21#,KZN215
5	Toyota	Toyota - General area - 4RUNNER - 200908 - GRN28
6	Toyota	Toyota - General area - COASTER (CHINA) - 201301 - GRB53,TRB53,XZB53
7	Toyota	Toyota - General area - DYNA - 202108 - GDY231,LY230
8	Toyota	Toyota - General area - FJ CRUISER - 200707 - GSJ15
9	Toyota	Toyota - General area - FJ CRUISER - 200707 - 202212 - GSJ15
10	Toyota	Toyota - General area - FORTUNER (SUV) - 202108 - GGN155,GUN15#,16#,LAN155,TGN156,16
11	Toyota	Toyota - General area - FORTUNER (SUV) - 202208 - GGN155,GUN15#,16#,LAN155,TGN156,166
12	Toyota	Toyota - General area - FORTUNER (SUV) - 202308 - GGN155,GUN15#,16#,TGN156,TGN166
13	Toyota	Toyota - General area - FORTUNER (SUV) - 202408 - GGN155,GUN15#,16#,TGN156,166
14	Toyota	Toyota - General area - FORTUNER - 200501 - 201204 - GGN50,60,KUN5#,6#,LAN50,TGN51,61
15	Toyota	Toyota - General area - FORTUNER - 201107 - 202110 - GGN50,60,KUN5#,6#,LAN50,TGN51,61
16	Toyota	Toyota - General area - FORTUNER - 201507 - 202104 - GGN155,165,GUN15#,16#,KUN156,165,LAN155,TGN156,16
17	Toyota	Toyota - General area - FORTUNER - 202006 - 202205 - GGN155,GUN1##,LAN155,TGN1
18	Toyota	Toyota - General area - GRANVIA/HIACE/MAJESTY - 201902 - GDH30#,32#,GRH30#,32
19	Toyota	Toyota - General area - GRNVA/HIACE/MJSTY - 201902 - GDH30#,32#,GRH30#,32
20	Toyota	Toyota - General area - HILUX (DOUBLE CAB) - 202108 - GGN125,GUN12#,13#,LAN125,TGN12#,13
21	Toyota	Toyota - General area - HILUX (DOUBLE CAB) - 202208 - GGN125,GUN12#,13#,LAN125,TGN12#,136
22	Toyota	Toyota - General area - HILUX (DOUBLE CAB) - 202308 - GG125,GUN12#,13#,TGN12#,136
23	Toyota	Toyota - General area - HILUX (DOUBLE CAB) - 202308 - GGN125,GUN12#,13#,LAN125,TGN12#,136
24	Toyota	Toyota - General area - HILUX (DOUBLE CAB) - 202308 - GGN125,GUN12#,13#,TGN12#,136
25	Toyota	Toyota - General area - HILUX (DOUBLE CAB) - 202408 - GGN125,GUN12#,13#,LAN125,TGN12#,136
26	Toyota	Toyota - General area - HILUX (DOUBLE CAB) - 202408 - GGN125,GUN12#,13#,TGN12#,136
27	Toyota	Toyota - General area - HILUX (SCB/XTR) - 202108 - GUN11#,12#,13#,LAN125,TGN11#,12#,136
28	Toyota	Toyota - General area - HILUX (SCB/XTR) - 202208 - GUN11#,12#,13#,LAN125,TGN11#,12#,136
29	Toyota	Toyota - General area - HILUX (SCB/XTR) - 202308 - GUN11#,12#,13#,LAN125,TGN11#,12#,136,XPN135
30	Toyota	Toyota - General area - HILUX (SCB/XTR) - 202308 - GUN11#,12#,13#,TGN11#,12#,136,XPN135
31	Toyota	Toyota - General area - HILUX (SCB/XTR) - 202308 - GUN11#,12#,13#,TGN11#,12
32	Toyota	Toyota - General area - HILUX (SCB/XTR) - 202408 - GUN11#,12#,13#,LAN125,TGN11#,12#,136
33	Toyota	Toyota - General area - HILUX (SCB/XTR) - 202408 - GUN11#,12#,13#,TGN11#,12
34	Toyota	Toyota - General area - HILUX CHAMP - 202312 - GUN1##,TGN11
35	Toyota	Toyota - General area - INNOVA - 201511 - GUN14#,TGN14
36	Toyota	Toyota - General area - Land Cruiser: LAND CRUISER (CHINA) - 200712 - 201612 - GRJ200,URJ202,UZJ200
37	Toyota	Toyota - General area - Land Cruiser: LAND CRUISER - 200701 - FZJ7#,GDJ7#,GDJL7#,GRJ7#,HZJ7#,VDJ7#,VDJL7
38	Toyota	Toyota - General area - Land Cruiser: LAND CRUISER - 200701 - GDJ7#,GDJL7#,FZJ7#,GRJ7#,HZJ7#,VDJ7#,VDJL7
39	Toyota	Toyota - General area - Land Cruiser: LAND CRUISER - 200709 - GRJ200,URJ20#,UZJ200,VDJ200
40	Toyota	Toyota - General area - Land Cruiser: LAND CRUISER - 202104 - FJA300,GRJ300,VJA300,VJH300
41	Toyota	Toyota - General area - Land Cruiser: LAND CRUISER - 202104 - FJA300,GRJ300,VJA300
42	Toyota	Toyota - General area - Prado: LAND CRUISER PRADO - 200209 - 201003 - GRJ12#,KDJ120,KZJ120,LJ12#,RZJ12#,TRJ12
43	Toyota	Toyota - General area - Prado: LAND CRUISER PRADO - 200908 - 201708 - GDJ150,GRJ150,KDJ150,LJ150,TRJ15
44	Toyota	Toyota - General area - Prado: LAND CRUISER PRADO - 201005 - 202006 - GRJ150L-GKAKC,GRJ152,TRJ150L-GKEKC,TRJ152
45	Toyota	Toyota - General area - Prado: LAND CRUISER PRADO - 201708 - GDJ150,GRJ150,KDJ150,LJ150,TRJ15
46	Toyota	Toyota - General area - Prado: LAND CRUISER PRADO - 202401 - GDJ25#,TJA250,TRJ250
47	Toyota	Toyota - General area - Prado: LAND CRUISER PRADO - 202401 - GDJ250,TJA250,TRJ250
48	Toyota	Toyota - General area - HELLAX: HILUX - 200408 - 201204 - GGN15,25,35,KUN1#,2#,3#,LAN15,25,35,TGN1#,26,36
49	Toyota	Toyota - General area - HELLAX: HILUX - 201107 - 202110 - GGN15,25,35,KUN1#,2#,3#,LAN15,25,35,TGN1#,26,36
50	Toyota	Toyota - General area - HELLAX: HILUX - 201505 - 202105 - GGN1##,GUN1##,KUN1##,LAN125,TGN1
51	Toyota	Toyota - General area - HELLAX: HILUX - 202006 - 202301 - GGN125,GUN1##,LAN125,TGN1
52	Toyota	Toyota - General area - Sea Lion Bus: HIACE - 201312 - GDH2##,KDH2##,LH2##,TRH2
53	Toyota	Toyota - General area - Crown: CROWN COMFORT - 199601 - 201801 - LXS1#,TSS10,YXS1
54	Toyota	Toyota - General area - Coster: COASTER (CHINA) - 201301 - GRB53,TRB53,XZB53
55	Toyota	Toyota - General area - Coster: COASTER - 199301 - 201612 - BB4#,5#,BZB40,50,HZB50,RZB40,50,TRB40,50,XZB40,5
56	Toyota	Toyota - General area - Coster: COASTER - 201701 - BB60,BZB60,70,GDB##,HZB60,70,TRB60,70,XZB60,70,80
57	Toyota	Toyota - Japan - DYNA - 202108 - GDY231,281,TRY230
58	Toyota	Toyota - Japan - DYNA/TOYOACE - 200107 - KDY2##,LY2##,RZY2##,TRY2
59	Toyota	Toyota - Japan - FJ CRUISER - 201011 - 201801 - GSJ15
60	Toyota	Toyota - Japan - Land Cruiser: LAND CRUISER - 201408 - GRJ7
61	Toyota	Toyota - Japan - Prado: LAND CRUISER PRADO - 200209 - 200908 - GRJ12#,KDJ12#,RZJ12#,TRJ12#,VZJ12
62	Toyota	Toyota - Japan - Prado: LAND CRUISER PRADO - 200908 - 201708 - GDJ15#,GRJ15#,TRJ150
63	Toyota	Toyota - Japan - Prado: LAND CRUISER PRADO - 201708 - GDJ15#,TRJ150
64	Toyota	Toyota - Japan - HELLAX: HILUX SURF - 200211 - 200908 - GRN215,KDN215,RZN21#,TRN21#,VZN21
65	Toyota	Toyota - Japan - Sea Lion Bus: HIACE/REGIUSACE - 201312 - KDH2##,TRH2##,GDH2
66	Toyota	Toyota - Japan - Crown: CROWN COMFORT/SED - 199512 - 201801 - GXS1#,LXS11,SXS1#,YXS1#,GBS12,TSS1
67	Toyota	Toyota - Europe - FORTUNER (SUV) - 202108 - 202208 - GUN156,TGN156
68	Toyota	Toyota - Europe - FORTUNER (SUV) - 202208 - GUN156,TGN156
69	Toyota	Toyota - Europe - FORTUNER (SUV) - 202208 - 202307 - GUN156,TGN156
70	Toyota	Toyota - Europe - FORTUNER (SUV) - 202308 - GUN156,TGN156
71	Toyota	Toyota - Europe - FORTUNER - 202006 - GUN156,TGN156
72	Toyota	Toyota - Europe - FORTUNER - 202006 - 202108 - GUN156,TGN156
73	Toyota	Toyota - Europe - Land Cruiser: LAND CRUISER - 201708 - GDJ15#,GRJ150,KDJ150,TRJ150
74	Toyota	Toyota - Europe - Land Cruiser: LAND CRUISER - 202104 - FJA300,GRJ300,VJA300
75	Toyota	Toyota - Europe - Prado: LAND CRUISER PRADO - 200209 - 200908 - GRJ12#,KDJ12
76	Toyota	Toyota - Europe - Prado: LAND CRUISER PRADO - 200908 - 201708 - GDJ15#,GRJ150,KDJ15
77	Toyota	Toyota - Europe - Coster: COASTER - 199301 - 201612 - BB4#,5#,BZB40,50,HZB50,RZB40,50,TRB40,50,XZB40,5
78	Toyota	Toyota - United States/Canada - 4RUNNER - 200208 - 200908 - GRN21#,UZN21
79	Toyota	Toyota - United States/Canada - 4RUNNER - 200908 - GRN28#,TRN28
80	Toyota	Toyota - United States/Canada - FJ CRUISER - 200601 - 201407 - GSJ1
81	Toyota	Toyota - United States/Canada - GRNVA/HIACE/MJSTY - 201902 - GDH30#,32#,GRH30#,32
82	Toyota	Toyota - United States/Canada - HILUX (DOUBLE CAB) - 202108 - GGN125,GUN12#,13#,LAN125,TGN12#,13
83	Toyota	Toyota - United States/Canada - HILUX (DOUBLE CAB) - 202208 - GGN125,GUN12#,13#,LAN125,TGN12#,136
84	Toyota	Toyota - United States/Canada - HILUX (DOUBLE CAB) - 202308 - GG125,GUN12#,13#,TGN12#,136
85	Toyota	Toyota - United States/Canada - HILUX (DOUBLE CAB) - 202308 - GGN125,GUN12#,13#,LAN125,TGN12#,136
86	Toyota	Toyota - United States/Canada - HILUX (SCB/XTR) - 202108 - GUN11#,12#,13#,LAN125,TGN11#,12#,136
87	Toyota	Toyota - United States/Canada - HILUX (SCB/XTR) - 202208 - GUN11#,12#,13#,LAN125,TGN11#,12#,136
88	Toyota	Toyota - United States/Canada - HILUX (SCB/XTR) - 202308 - GUN11#,12#,13#,LAN125,TGN11#,12#,136,XPN135
89	Toyota	Toyota - United States/Canada - HILUX (SCB/XTR) - 202308 - GUN11#,12#,13#,TGN11#,12
90	Toyota	Toyota - United States/Canada - TACOMA - 200409 - GRN2##,3##,TRN2
91	Toyota	Toyota - United States/Canada - Land Cruiser: LAND CRUISER - 200701 - FZJ7#,GDJ7#,GDJL7#,GRJ7#,HZJ7#,VDJ7#,VDJL7
92	Toyota	Toyota - United States/Canada - Land Cruiser: LAND CRUISER - 200701 - GDJ7#,GDJL7#,FZJ7#,GRJ7#,HZJ7#,VDJ7#,VDJL7
93	Toyota	Toyota - United States/Canada - Tundra: TUNDRA - 200611 - 202110 - GSK5#,UCK5#,UPK5#,USK5
94	Toyota	Toyota - United States/Canada - HELLAX: HILUX - 200408 - 201204 - GGN15,25,35,KUN1#,2#,3#,LAN15,25,35,TGN1#,26,36
95	Toyota	Toyota - United States/Canada - HELLAX: HILUX - 201107 - 202110 - GGN15,25,35,KUN1#,2#,3#,LAN15,25,35,TGN1#,26,36
96	Toyota	Toyota - United States/Canada - HELLAX: HILUX - 201505 - 202105 - GGN1##,GUN1##,KUN1##,LAN125,TGN1
97	Toyota	Toyota - United States/Canada - HELLAX: HILUX - 202006 - 202301 - GGN125,GUN1##,LAN125,TGN1

Product Overview

OE 16603-31050 is the genuine Lexus OEM generator belt tensioner pulley that drives the accessory belt and turns the accessory mounted on it. It is used on 4RUNNER, COASTER (CHINA), DYNA, DYNA/TOYOACE, FJ CRUISER and FORTUNER (SUV), built from 1993 to 2024. 2 cross-reference numbers apply, including 0-N1878 and 166030E010.

Ask for a wholesale quotation with your VIN or OE number; we ship worldwide.

Technical Specifications

OE Number	1660331050
Part Name	Tensioner Pulley
Brand	Toyota
Type	Belt Tensioner Pulley (Generator Belt Tensioner Pulley)
Width	33mm
Bore Diameter	10.3mm

OE Cross-Reference

0-N1878	OPTIMAL
166030E010	Toyota

Questions and Answers

Which Toyota or Lexus vehicles is 16603-31050 used on?

16603-31050 covers 4RUNNER, COASTER (CHINA), DYNA, DYNA/TOYOACE, FJ CRUISER and FORTUNER (SUV), with production years 1993 to 2024.

What part numbers replace 16603-31050?

Listed on this page are 2 interchangeable numbers for 16603-31050, among them 0-N1878 (OPTIMAL), 166030E010 (Toyota).

What are the dimensions of 16603-31050?

Measuring 33mm wide, this Lexus Generator Belt Tensioner Pulley (part number 16603-31050) is a genuine unit.

How can I verify that 16603-31050 is a genuine Toyota part?

To verify this Generator Belt Tensioner Pulley, look for the ten-character number 16603-31050 on the box label together with the country-of-origin marking, then check that the part number is die-stamped or laser-etched into the metal itself rather than printed in ink, and it matches the box label, and that the metal carries the supplier’s mark cast or stamped next to Toyota’s own mark, not a separate printed sticker. We can provide the invoice, packing list and CoO for any order.

How many pieces are needed for 16603-31050?

Sold as one piece per position – check the quantity required for your application.

Is there anything I need to know before installing this part?

A few points before you fit it: Compare the number on the part with your invoice before installation, and follow the torque values in the service manual.

Is the genuine part worth it compared with an aftermarket equivalent?

What the genuine item buys you is concrete: the part is machined to OE tolerance, so it mounts and seats without shimming or rework; and the OE heat treatment and surface finish help the part resist wear, corrosion and seizing. These are the aftermarket equivalents you may also see quoted.