Find your car parts
Enter your registration below

VAICO V45-80003 Brake disc for Porsche 986 Front Axle, 298x24mm, 5x130, Vented

Article number: V45-80003 Manufacturer: VAICO
Brake rotor VAICO V45-80003 for PORSCHE
Trade numbers: VAICO V45-80003
  • Brake discs VAICO V45-80003 cheap online
  • Brake rotors VAICO V45-80003 product review
Details
Supplementary Info: Original VAICO Quality
Fitting Position: Front Axle
Diameter [mm]: 298
Brake Disc Type: Vented
Centering Diameter [mm]: 98
Rim Hole Number: 5
Bolt Hole Circle Ø [mm]: 130
Brake Disc Thickness [mm]: 24
Minimum thickness [mm]: 22
Height [mm]: 67
Brake Disc Hub Height [mm]: 43
Packaging width [cm]: 30
Packaging height [cm]: 14
Packaging Depth [cm]: 30
Drilled: no
Condition: New
More +
  • Attractive prices: VAICO V45-80003 Brake disc Attractive prices

    Shop where the bargains are! We offer:

    • a vast choice of automotive goods at attractive prices
    • special offers
    • free delivery on orders above a certain amount
  • Fast delivery: VAICO V45-80003 Brake disc Fast delivery

    Do you have to repair your car urgently? Get the parts you need quickly. See our delivery policy for detailed information.

  • Easy return or exchange: Brake disc VAICO V45-80003 Easy return or exchange

    You can easily exchange an item for another one, or return it to our warehouse within the standard return period and get your money back. Follow this link to find out more about our return and exchange terms and conditions. You also have the possibility to extend the standard return term from 14 to 100 days using the Safe Order option.

  • Professional assistance: Brake disc VAICO V45-80003 Professional assistance

    Do you have questions about an item or an order? You can find answers here or contact our customer support agents via any convenient channel.

0/5
(reviews - 0)
£ 38,48
Price per item
price incl. 20% VAT, excl. delivery costs
Сurrently out of stock
Notify when in stock

Brake disc VAICO V45-80003 - compatible car models

Car models Porsche 986
Engines 2.7; S 3.2; 2.5
Engine power (horsepower) 204-266 hp
Power (kilowatts) 150-196 kW
Year of manufacture 1996-2004
Manufacturer article number V45-80003
OE part number(s) 98635140104, 986 351 401 05
If a part is temporarily unavailable, you could substitute it with these parts:
BDC4790 Parts Details
  • Diameter [mm]: 298
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Minimum thickness [mm]: 22
  • Height [mm]: 67
  • Drilled: no
  • Condition: New
In stock
Details
QUINTON HAZELL BDC4790P Brake disc
Brake disc QUINTON HAZELL BDC4790
Article number: BDC4790
£ 66,24
Price per item
price incl. 20% VAT, excl. delivery costs
24.0124-0165.1 Parts Details
  • Diameter [mm]: 298,0
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98,0
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 130,0
  • Brake Disc Thickness [mm]: 24,0
  • Surface: Coated
  • Minimum thickness [mm]: 22,0
  • Inner Diameter [mm]: 164,0
  • Height [mm]: 67
  • Machining: Alloyed/High-carbon
  • MAPP code available
  • Test Mark: E1 90R-02C0115/0021
  • Bore Diameter [mm]: 15,4
  • Drilled: no
  • Condition: New
In stock
Details
ATE 424165 Brake disc
Brake disc ATE 24.0124-0165.1
Article number: 24.0124-0165.1
£ 63,48
Price per item
price incl. 20% VAT, excl. delivery costs
0986478477 Parts Details
  • Diameter [mm]: 297,8
  • Brake Disc Type: Vented, internally vented
  • Centering Diameter [mm]: 98
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Oiled
  • Minimum thickness [mm]: 22
  • Height [mm]: 67
  • Machining: Alloyed/High-carbon
  • fulfils ECE norm: ECE-R90
  • Bore Diameter up to [mm]: 15,4
  • Drilled: no
  • Condition: New
In stock
Details
BOSCH BD405 Brake disc
Brake disc BOSCH 0 986 478 477
Article number: 0 986 478 477
£ 47,24
Price per item
price incl. 20% VAT, excl. delivery costs
460.1523.20 Parts Details
  • Product line: COAT Z
  • Diameter [mm]: 298
  • Brake Disc Type: internally vented
  • Centering Diameter [mm]: 98
  • Rim Hole Number: 5
  • Hole Arrangement/Number: 9/5
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Height [mm]: 67
  • Weight [kg]: 6,5
  • Test Mark: ECE R90 APPROVED
  • Drilled: no
  • Condition: New
In stock
Details
ZIMMERMANN 460.1523.20 Brake disc
Brake disc ZIMMERMANN 460.1523.20
Article number: 460.1523.20
£ 64,24
Price per item
price incl. 20% VAT, excl. delivery costs
460.1523.52 Parts Details
  • Product line: SPORT COAT Z
  • Diameter [mm]: 298
  • Brake Disc Type: internally vented, Perforated
  • Centering Diameter [mm]: 98
  • Rim Hole Number: 5
  • Hole Arrangement/Number: 9/5
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Height [mm]: 67
  • Weight [kg]: 6,5
  • Test Mark: ECE R90 APPROVED
  • Drilled: yes
  • Condition: New
In stock
Details
ZIMMERMANN 460.1523.52 Brake disc
Brake disc ZIMMERMANN 460.1523.52
Article number: 460.1523.52
£ 116,24
Price per item
price incl. 20% VAT, excl. delivery costs
DDF1293C-1 Parts Details
  • Product line: PREMIER Coat+ disc
  • Diameter [mm]: 298
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Number of Holes: 5
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Height [mm]: 66,9
  • Weight [kg]: 6,86
  • Tightening Torque [Nm]: 130
  • Supplementary Article / Supplementary Info Info 2: without bolts/screws
  • Packaging length [cm]: 30
  • Packaging width [cm]: 30
  • Packaging height [cm]: 6,3
  • Drilled: no
  • Condition: New
In stock
Details
FERODO DDF1293C Brake disc
Brake disc FERODO DDF1293C-1
Article number: DDF1293C-1
£ 91,24
Price per item
price incl. 20% VAT, excl. delivery costs
09.9482.11 Parts Details
  • Product line: Prime
  • Diameter [mm]: 298
  • Brake Disc Type: internally vented
  • Centering Diameter [mm]: 98
  • Number of Holes: 5
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Height [mm]: 67
  • Tightening Torque [Nm]: 130
  • Machining: High-carbon
  • Drilled: no
  • Condition: New
In stock
Details
BREMBO 09.9482.11 Brake disc
Brake disc BREMBO 09.9482.11
Article number: 09.9482.11
£ 52,24
Price per item
price incl. 20% VAT, excl. delivery costs
DF6411 Parts Details
  • Diameter [mm]: 298
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Painted
  • Minimum thickness [mm]: 22
  • Height [mm]: 66
  • Colour: black
  • Test Mark: E1 90R-02 C0176/0199
  • Drilled: no
  • Condition: New
In stock
Details
TRW DF6411 Brake disc
Brake disc TRW DF6411
Article number: DF6411
£ 55,24
Price per item
price incl. 20% VAT, excl. delivery costs
92088803 Parts Details
  • Product line: PRO
  • Diameter [mm]: 298
  • Brake Disc Type: internally vented
  • Centering Diameter [mm]: 98
  • Hole Arrangement/Number: 05/09
  • Wheel Bolt Bore Diameter [mm]: 15,4
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Inner Diameter [mm]: 164,2
  • Height [mm]: 67
  • Weight [kg]: 6,7
  • Supplementary Article / Supplementary Info Info 2: without wheel hub, without wheel bearing, without wheel studs
  • Packaging length [cm]: 30,8
  • Packaging width [cm]: 30,8
  • Packaging height [cm]: 16
  • Drilled: no
  • Condition: New
In stock
Details
TEXTAR 98200 0888 0 1 PRO Brake disc
Brake disc TEXTAR 92088803
Article number: 92088803
£ 56,48
Price per item
price incl. 20% VAT, excl. delivery costs
17074 Parts Details
  • Product line: COATED
  • Diameter [mm]: 298
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Rim Hole Number: 5
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Hub Diameter [mm]: 168
  • Height [mm]: 67
  • Weight [kg]: 6,88
  • Drilled: no
  • Condition: New
In stock
Details
A.B.S. 17074 Brake disc
Brake disc A.B.S. 17074
Article number: 17074
£ 49,24
Price per item
price incl. 20% VAT, excl. delivery costs
82B0798 Parts Details
  • Fitting Position: Front Axle
  • Diameter [mm]: 298
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Number of Holes: 5/9
  • Wheel Bolt Bore Diameter [mm]: 15,5
  • Bolt Hole Circle Ø [mm]: 120
  • Brake Disc Thickness [mm]: 24
  • Surface: Uncoated
  • Material: Cast Iron
  • Minimum thickness [mm]: 22
  • Inner Diameter [mm]: 158,8
  • Height [mm]: 67
  • Bore Diameter [mm]: 15,4
  • Supplementary Article / Supplementary Info Info 2: without bolts/screws
  • Drilled: no
  • Condition: New
In stock
Details
RIDEX 82B0798 Brake disc
Brake disc RIDEX 82B0798
Article number: 82B0798
£ 46,72
Price per set (The kit consists of 1 items)
price incl. 20% VAT, excl. delivery costs
4835210001/PD Parts Details
  • Supplementary Info: MEYLE-PD Quality
  • Fitting Position: Front Axle
  • Diameter [mm]: 298
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Number of Holes: 5
  • Wheel Bolt Bore Diameter [mm]: 15,4
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Zink flake coated
  • Minimum thickness [mm]: 18
  • Height [mm]: 67
  • Machining: High-carbon
  • Required quantity: 2
  • Quality: PREMIUM
  • Drilled: no
  • Condition: New
In stock
Details
MEYLE MBD1598PD Brake disc
Brake disc MEYLE 483 521 0001/PD
Article number: 483 521 0001/PD
£ 50,72
Price per item
price incl. 20% VAT, excl. delivery costs
8DD355125-451 Parts Details
  • Product line: PRO High Carbon
  • Diameter [mm]: 298
  • Brake Disc Type: internally vented
  • Centering Diameter [mm]: 98
  • Hole Arrangement/Number: 05/09
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Height [mm]: 67
  • Weight [kg]: 6,7
  • Machining: High-carbon
  • Supplementary Article / Supplementary Info Info 2: without wheel hub, without wheel studs
  • Assy./disassy. by qualified personnel required!
  • Drilled: no
  • Condition: New
In stock
Details
HELLA 50225PRO_HC Brake disc
Brake disc HELLA 8DD 355 125-451
Article number: 8DD 355 125-451
£ 55,24
Price per item
price incl. 20% VAT, excl. delivery costs
104856 Parts Details
  • Fitting Position: Front Axle
  • Diameter [mm]: 298
  • Brake Disc Type: internally vented
  • Centering Diameter [mm]: 98
  • Rim Hole Number: 5
  • Bolt Hole Circle Ø [mm]: 130
  • Thickness [mm]: 67
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Weight [kg]: 6,7
  • Number of mounting bores: 1
  • Observe service information
  • Drilled: no
  • Condition: New
In stock
Details
FEBI BILSTEIN 104856 Brake disc
Brake disc FEBI BILSTEIN 104856
Article number: 104856
£ 43,24
Price per item
price incl. 20% VAT, excl. delivery costs
BS-8158C Parts Details
  • Fitting Position: Front Axle
  • Diameter [mm]: 298
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Hole Arrangement/Number: 5/9
  • Brake Disc Thickness [mm]: 24
  • Surface: Coated
  • Minimum thickness [mm]: 22
  • Height [mm]: 67
  • Drilled: no
  • Condition: New
In stock
Details
OPTIMAL BS-8158C Brake disc
Brake disc OPTIMAL BS-8158C
Article number: BS-8158C
£ 248,48
Price per item
price incl. 20% VAT, free delivery
OE-Number
Proceed to comparison by OEM number
Suitable cars
PORSCHE
TecDoc equivalents for VAICO V45-80003 Brake disc
  • A.B.S.: 17074, 17074, 17074S
  • ATE: 24.0124-0165.1, 24.1124-0165.1
  • BECK/ARNLEY: 083-2728
  • BENDIX: 562162B
  • BLUE PRINT: ADV184378
  • BOSCH: 0 986 478 477
  • BREMBO: 09.9482.10
  • DELPHI: BG3409
  • FEBI BILSTEIN: 104856
  • FERODO: DDF1293C, DDF1293
  • FIRST LINE: FBD1134
  • FTE: BS4790
  • HELLA: 8DD 355 125-451, 8DD 355 105-711
  • HELLA PAGID: 8DD 355 121-842
  • JURID: 562162J
  • LEMFÖRDER: 30493 01
  • LPR: P2012V
  • MAGNETI MARELLI: 360406199001
  • METELLI: 23-1075C
  • METZGER: 24921, 6110477
  • MEYLE: 483 521 0001/PD, 415 521 0001/PD
  • MINTEX: MDC1362
  • OPTIMAL: BS-8158, BS-8158C
  • PAGID: 50225
  • PEX: 14.0904
  • QUINTON HAZELL: BDC4790
  • SWAG: 38 10 4856
  • TEXTAR: 92088800, 92088803, 92088805
  • TRISCAN: 8120 101050, 8120 101050C
  • TRUSTING: DF1618
  • TRW: DF6411
  • VAICO: 45-80003
  • ZIMMERMANN: 460.1523.20

Similar products you may need

V25-40012 Parts Details
  • Supplementary Info: Original VAICO Quality
  • Fitting Position: Rear Axle
  • Diameter [mm]: 280
  • Brake Disc Type: solid
  • Centering Diameter [mm]: 96
  • Rim Hole Number: 5
  • Bolt Hole Circle Ø [mm]: 160
  • Brake Disc Thickness [mm]: 16
  • Minimum thickness [mm]: 13
  • Height [mm]: 68,7
  • Brake Disc Hub Height [mm]: 52,7
  • Packaging width [cm]: 28
  • Packaging height [cm]: 14
  • Packaging Depth [cm]: 28
  • Drilled: no
  • Condition: New
In stock
Details
VAICO V25-40012 Brake disc
Brake disc VAICO V25-40012
Article number: V25-40012
£ 44,48
Price per item
price incl. 20% VAT, excl. delivery costs
V25-80019 Parts Details
  • Supplementary Info: Original VAICO Quality
  • Fitting Position: Front Axle
  • Diameter [mm]: 278
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 72
  • Rim Hole Number: 5
  • Bolt Hole Circle Ø [mm]: 114,3
  • Brake Disc Thickness [mm]: 24
  • Minimum thickness [mm]: 22
  • Height [mm]: 47
  • Brake Disc Hub Height [mm]: 23
  • Packaging width [cm]: 28
  • Packaging height [cm]: 10
  • Packaging Depth [cm]: 28
  • Drilled: no
  • Condition: New
In stock
Details
VAICO V25-80019 Brake disc
Brake disc VAICO V25-80019
Article number: V25-80019
£ 28,96
Price per item
price incl. 20% VAT, excl. delivery costs
V25-80020 Parts Details
  • Supplementary Info: Original VAICO Quality
  • Diameter [mm]: 300
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 63,5
  • Rim Hole Number: 4
  • Bolt Hole Circle Ø [mm]: 108
  • Brake Disc Thickness [mm]: 24
  • Minimum thickness [mm]: 22
  • Height [mm]: 44,5
  • Weight [kg]: 7,47
  • Brake Disc Hub Height [mm]: 20,5
  • Packaging width [cm]: 29,7
  • Packaging height [cm]: 4,7
  • Packaging Depth [cm]: 30,2
  • Drilled: no
  • Condition: New
In stock
Details
VAICO V25-80020 Brake disc
Brake disc VAICO V25-80020
Article number: V25-80020
£ 32,96
Price per item
price incl. 20% VAT, excl. delivery costs
V45-80005 Parts Details
  • Supplementary Info: Original VAICO Quality
  • Fitting Position: Rear Axle
  • Diameter [mm]: 292
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 98
  • Rim Hole Number: 5
  • Bolt Hole Circle Ø [mm]: 130
  • Brake Disc Thickness [mm]: 20
  • Minimum thickness [mm]: 18
  • Height [mm]: 67
  • Brake Disc Hub Height [mm]: 47
  • Packaging height [cm]: 14
  • Packaging Depth [cm]: 30
  • Drilled: no
  • Condition: New
Сurrently out of stock
Details
VAICO V45-80005 Brake disc
Brake disc VAICO V45-80005
Article number: V45-80005
£ 45,24
Price per item
price incl. 20% VAT, excl. delivery costs
V40-80004 Parts Details
  • Supplementary Info: Original VAICO Quality
  • Fitting Position: Front Axle
  • Diameter [mm]: 303
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 70,7
  • Rim Hole Number: 5
  • Bolt Hole Circle Ø [mm]: 115
  • Brake Disc Thickness [mm]: 20
  • Minimum thickness [mm]: 18,4
  • Inner Diameter [mm]: 190
  • Height [mm]: 71,6
  • Weight [kg]: 7,068
  • Brake Disc Hub Height [mm]: 51,7
  • Packaging width [cm]: 30,4
  • Packaging height [cm]: 7,5
  • fulfils ECE norm: R90
  • Drilled: no
  • Condition: New
In stock
Details
VAICO V40-80004 Brake disc
Brake disc VAICO V40-80004
Article number: V40-80004
£ 42,48
Price per item
price incl. 20% VAT, excl. delivery costs
24.0110-0232.1 Parts Details
  • Diameter [mm]: 239
  • Brake Disc Type: solid
  • Centering Diameter [mm]: 65,0
  • Number of Holes: 4
  • Bolt Hole Circle Ø [mm]: 100,0
  • Brake Disc Thickness [mm]: 9,9
  • Surface: Coated
  • Minimum thickness [mm]: 8,0
  • Inner Diameter [mm]: 125,0
  • Height [mm]: 33,6
  • Test Mark: E1 90R-02C0165/1150
  • Bore Diameter [mm]: 13,8
  • Supplementary Article / Supplementary Info Info 2: with bolts/screws
  • Drilled: no
  • Condition: New
In stock
Details
ATE 410232 Brake disc
Brake disc ATE 24.0110-0232.1
Article number: 24.0110-0232.1
£ 20,24
Price per item
price incl. 20% VAT, excl. delivery costs
24.0122-0211.1 Parts Details
  • Diameter [mm]: 294,0
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 76,0
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 120,0
  • Brake Disc Thickness [mm]: 21,9
  • Surface: Coated
  • Minimum thickness [mm]: 19,5
  • Inner Diameter [mm]: 154,6
  • Height [mm]: 44,4
  • Machining: High-carbon
  • MAPP code available
  • Test Mark: E1 90R-02C0118/0060
  • Bore Diameter [mm]: 16,6
  • Supplementary Article / Supplementary Info Info 2: with bolts/screws
  • Drilled: no
  • Condition: New
In stock
Details
ATE 422211 Brake disc
Brake disc ATE 24.0122-0211.1
Article number: 24.0122-0211.1
£ 52,48
Price per item
price incl. 20% VAT, excl. delivery costs
24.0124-0197.1 Parts Details
  • Diameter [mm]: 300,0
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 79,0
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 120,0
  • Brake Disc Thickness [mm]: 24,0
  • Surface: Coated
  • Minimum thickness [mm]: 22,4
  • Inner Diameter [mm]: 152,0
  • Height [mm]: 73,5
  • Machining: High-carbon
  • MAPP code available
  • Test Mark: E1 90R-02C0115/0022
  • Bore Diameter [mm]: 14,5
  • Supplementary Article / Supplementary Info Info 2: with bolts/screws
  • Drilled: no
  • Condition: New
In stock
Details
ATE 424197 Brake disc
Brake disc ATE 24.0124-0197.1
Article number: 24.0124-0197.1
£ 50,24
Price per item
price incl. 20% VAT, excl. delivery costs
24.0125-0145.1 Parts Details
  • Diameter [mm]: 288
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 65,0
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 112,0
  • Brake Disc Thickness [mm]: 25,0
  • Surface: Coated
  • Minimum thickness [mm]: 22,0
  • Inner Diameter [mm]: 144,0
  • Height [mm]: 49,9
  • Machining: High-carbon
  • MAPP code available
  • No. of holes 2: 9
  • Test Mark: E1 90R-02C0115/0010
  • Bore Diameter [mm]: 15,3
  • Supplementary Article / Supplementary Info Info 2: with bolts/screws
  • Drilled: no
  • Condition: New
In stock
Details
ATE 425145 Brake disc
Brake disc ATE 24.0125-0145.1
Article number: 24.0125-0145.1
£ 52,96
Price per item
price incl. 20% VAT, excl. delivery costs
24.0125-0147.1 Parts Details
  • Diameter [mm]: 282,5
  • Brake Disc Type: Vented
  • Centering Diameter [mm]: 72,0
  • Number of Holes: 5
  • Bolt Hole Circle Ø [mm]: 114,3
  • Brake Disc Thickness [mm]: 25,0
  • Surface: Coated
  • Minimum thickness [mm]: 23,0
  • Inner Diameter [mm]: 142,0
  • Height [mm]: 48,5
  • MAPP code available
  • Test Mark: E1 90R-02C0115/0322
  • Bore Diameter [mm]: 13,0
  • Drilled: no
  • Condition: New
In stock
Details
ATE 425147 Brake disc
Brake disc ATE 24.0125-0147.1
Article number: 24.0125-0147.1
£ 42,72
Price per item
price incl. 20% VAT, excl. delivery costs

Buy now: VAICO V45-80003 Brake disc Front Axle, 298x24mm, 5x130, Vented – Only £ 38,48 + £ 8,45 Shipping Cost