Catalogue

Expand all | Collapse all | Show hidden lines

  • Banner

BOSCH 0 241 252 522 Spark Plug

0 241 252 522
£0.00
Tax included
Quantity
Out-of-Stock

  Security policy

(edit with the Customer Reassurance module)

  Delivery policy

(edit with the Customer Reassurance module)

  Return policy

(edit with the Customer Reassurance module)

BorgWarner (BERU)
0001352801
BorgWarner (BERU)
144CS1
BorgWarner (BERU)
260143S
BOSCH
W4CS
BRISK
L15W
CHAMPION
N3
CHAMPION
N62R
CITROËN
596128
CITROËN
5962R1
HONDA
9807958644
MAGNETI MARELLI
CW10L
NGK
B8EV
NGK
BR8EV
PEUGEOT
596128
PEUGEOT
5962R1
PORSCHE
99917014090
VW
N01781322
Manufacturer Model Engine Engine info Years Note
ALPINE 1600 1.6 SC-SI 1605 ccm, 93 kw, 127 hp 1973 - 1975 Engine Code : 844 30,31, Engine Code : 844 34
CAGIVA MOTORCYCLES 125 SST 123 ccm, 7 kw, 10 hp 1981 - Construction year to : 12/1982
CAGIVA MOTORCYCLES 125 SX 123 ccm, 13 kw, 18 hp 1981 - Construction year to : 11/1983
MOTO GUZZI MC LE MANS Le Mans CX 100 949 ccm, 60 kw, 82 hp 1979 - 1980 Electrode gap to be set [mm] : 0,7
MOTO GUZZI MC V 35 V 35 C 346 ccm, 21 kw, 29 hp 1982 - 1987
MOTO GUZZI MC V 35 V 35 Trentacinque GT 346 ccm, 26 kw, 35 hp 1988 - 1992 Construction year to : 12/1991
MOTO GUZZI MC V 65 V 65 GT Sessantacinque 643 ccm, 37 kw, 50 hp 1988 - 1995
PORSCHE 924 2.0 Carrera GT 1984 ccm, 154 kw, 209 hp 1980 - 1986 Construction year to : 06/1981, Electrode gap to be set [mm] : 0,7
PORSCHE 924 2.0 Turbo 1984 ccm, 125 kw, 170 hp 1978 - 1980 Electrode gap to be set [mm] : 0,7
RENAULT 18 (134_) 1.6 Turbo (1345) 1565 ccm, 80 kw, 109 hp 1980 - 1982
RENAULT 18 (134_) 1.6 Turbo (1345) 1565 ccm, 92 kw, 125 hp 1982 - 1986 Construction year to : 02/1986
RENAULT 18 (134_) 1.6 Turbo Inj. 1647 ccm, 82 kw, 112 hp 1982 - 1986 Construction year to : 06/1985
RENAULT 18 Break (135_) 1.6 1647 ccm, 82 kw, 111 hp 1983 - 1986 Construction year to : 06/1985
RENAULT 18 Break (135_) 1.6 Turbo 1565 ccm, 92 kw, 125 hp 1982 - 1986 Construction year to : 09/1985
RENAULT 18 Break (135_) 1.6 Turbo (1355) 1565 ccm, 80 kw, 109 hp 1982 - 1986 Construction year from : 06/1983, Construction year to : 06/1985
RENAULT FUEGO (136_) 1.6 Turbo (1365) 1565 ccm, 97 kw, 132 hp 1983 - 1985
RENAULT SUPER 5 (B/C40_) 1.4 Turbo (C405) 1397 ccm, 88 kw, 120 hp 1985 - 1990
RENAULT SUPER 5 Box (S40_) 1.4 1397 ccm, 85 kw, 116 hp 1985 - 1987 Construction year from : 06/1987
Product Details
BOSCH
0 241 252 522
New product

Data sheet

Number of Poles
1
Spanner Size
20,8
Tightening Torque [Nm]
28
Electrode Gap [mm]
0,6
Thread Length [mm]
19
Outer thread [mm]
14
Spark Position [mm]
1
Thread Pitch [mm]
1,25
Tightening angle [degrees]
90
New product
100 other products in the same category:

Reference: T20PR-U

Brand: DENSO

DENSO T20PR-U Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W20TT

Brand: DENSO

DENSO W20TT Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: X16EP-U9

Brand: DENSO

DENSO X16EP-U9 Spark Plug

Diameter [mm] : 12, Spanner Size : 18, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 230 522

Brand: BOSCH

BOSCH 0 242 230 522 Spark Plug

Number of Poles : 1, Spanner Size : 21, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 219 516

Brand: BOSCH

BOSCH 0 242 219 516 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 9 240 160 014

Brand: BOSCH

BOSCH 9 240 160 014 Spark Plug

Quantity Unit : Set

(0)

Price £0.00
More
Out-of-Stock

Reference: U24FE-ZU9

Brand: DENSO

DENSO U24FE-ZU9 Spark Plug

Diameter [mm] : 10, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 236 573

Brand: BOSCH

BOSCH 0 242 236 573 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z290

Brand: Beru By Driv

BERU by DRiV Z290 Spark Plug

Thread Size : M14x1,25, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 000 KE0 P53

Brand: BOSCH

BOSCH F 000 KE0 P53 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z193

Brand: Beru By Driv

BERU by DRiV Z193 Spark Plug

Thread Size : M14x1,25, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W22EPR-S11

Brand: DENSO

DENSO W22EPR-S11 Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z352

Brand: Beru By Driv

BERU by DRiV Z352 Spark Plug

Thread Size : M18x1,5, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 135 560

Brand: BOSCH

BOSCH 0 242 135 560 Spark Plug

Number of Poles : 1, Spanner Size : 14, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: PK20PR-P8

Brand: DENSO

DENSO PK20PR-P8 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 140 518

Brand: BOSCH

BOSCH 0 242 140 518 Spark Plug

Number of Poles : 1, Spanner Size : 17,5, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: T14PR-U15

Brand: DENSO

DENSO T14PR-U15 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 230 611

Brand: BOSCH

BOSCH 0 242 230 611 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: XU24EPR-U

Brand: DENSO

DENSO XU24EPR-U Spark Plug

Diameter [mm] : 12, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W20ETR

Brand: DENSO

DENSO W20ETR Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 200/14/3 A

Brand: Beru By Driv

BERU by DRiV 200/14/3 A Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 222 501

Brand: BOSCH

BOSCH 0 242 222 501 Spark Plug

Number of Poles : 4, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 9 240 034 529

Brand: BOSCH

BOSCH 9 240 034 529 Spark Plug

Electrode Gap [mm] : 0,5

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 255 543

Brand: BOSCH

BOSCH 0 242 255 543 Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: W20ES-U

Brand: DENSO

DENSO W20ES-U Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 135 529

Brand: BOSCH

BOSCH 0 242 135 529 Spark Plug

Number of Poles : 1, Spanner Size : 14, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z353SB

Brand: Beru By Driv

BERU by DRiV Z353SB Spark Plug

Thread Size : M18x1,5, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: FK16HR11

Brand: DENSO

DENSO FK16HR11 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W20MP-U10

Brand: DENSO

DENSO W20MP-U10 Spark Plug

Diameter [mm] : 14, Spanner Size : 19, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 225 630

Brand: BOSCH

BOSCH 0 242 225 630 Spark Plug

Number of Poles : 4, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z90SB

Brand: Beru By Driv

BERU by DRiV Z90SB Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: U22EPR9

Brand: DENSO

DENSO U22EPR9 Spark Plug

Diameter [mm] : 10, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 235 769

Brand: BOSCH

BOSCH 0 242 235 769 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: X24EPR-ZU9

Brand: DENSO

DENSO X24EPR-ZU9 Spark Plug

Diameter [mm] : 12, Spanner Size : 18, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z30SB

Brand: Beru By Driv

BERU by DRiV Z30SB Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z253

Brand: Beru By Driv

BERU by DRiV Z253 Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 000 KE0 P31

Brand: BOSCH

BOSCH F 000 KE0 P31 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 245 655

Brand: BOSCH

BOSCH 0 241 245 655 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z234SB

Brand: Beru By Driv

BERU by DRiV Z234SB Spark Plug

Thread Size : M12x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 129 529

Brand: BOSCH

BOSCH 0 242 129 529 Spark Plug

Number of Poles : 1, Spanner Size : 14, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 002 G40 532

Brand: BOSCH

BOSCH F 002 G40 532 Spark Plug

Number of Poles : 2, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 230 602

Brand: BOSCH

BOSCH 0 242 230 602 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 005 X10 649

Brand: BOSCH

BOSCH F 005 X10 649 Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: F 01A 227 B21

Brand: BOSCH

BOSCH F 01A 227 B21 Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: M14-225

Brand: Beru By Driv

BERU by DRiV M14-225 Spark Plug

Thread Size : M14x1,25, Manufacturer ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 255 509

Brand: BOSCH

BOSCH 0 242 255 509 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 235 947

Brand: BOSCH

BOSCH 0 242 235 947 Spark Plug

Number of Poles : 2, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z144

Brand: Beru By Driv

BERU by DRiV Z144 Spark Plug

Thread Size : M14x1,25, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 14-8 C

Brand: Beru By Driv

BERU by DRiV 14-8 C Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: KJ20DR-M11

Brand: DENSO

DENSO KJ20DR-M11 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W27EMR-ZU

Brand: DENSO

DENSO W27EMR-ZU Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z242

Brand: Beru By Driv

BERU by DRiV Z242 Spark Plug

Thread Size : M12x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: K22PB

Brand: DENSO

DENSO K22PB Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z275

Brand: Beru By Driv

BERU by DRiV Z275 Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z211

Brand: Beru By Driv

BERU by DRiV Z211 Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W27FN

Brand: DENSO

DENSO W27FN Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 236 838

Brand: BOSCH

BOSCH 0 241 236 838 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W16FP-U10

Brand: DENSO

DENSO W16FP-U10 Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: TR24-10

Brand: DENSO

DENSO TR24-10 Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: K22PR-U11

Brand: DENSO

DENSO K22PR-U11 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 005 X19 576

Brand: BOSCH

BOSCH F 005 X19 576 Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 229 579

Brand: BOSCH

BOSCH 0 241 229 579 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 229 933

Brand: BOSCH

BOSCH 0 241 229 933 Spark Plug

Number of Poles : 3, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 240 533

Brand: BOSCH

BOSCH 0 242 240 533 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z328

Brand: Beru By Driv

BERU by DRiV Z328 Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: QJ16CR11

Brand: DENSO

DENSO QJ16CR11 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 229 880

Brand: BOSCH

BOSCH 0 242 229 880 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 986 240 081

Brand: BOSCH

BOSCH 0 986 240 081 Spark Plug

Quantity Unit : Set

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 245 585

Brand: BOSCH

BOSCH 0 242 245 585 Spark Plug

Number of Poles : 1, Connector type : Napf, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z98SB

Brand: Beru By Driv

BERU by DRiV Z98SB Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 274 505

Brand: BOSCH

BOSCH 0 241 274 505 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z322

Brand: Beru By Driv

BERU by DRiV Z322 Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z42SB

Brand: Beru By Driv

BERU by DRiV Z42SB Spark Plug

Thread Size : M14x1,25, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 245 656

Brand: BOSCH

BOSCH 0 241 245 656 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: T20EPR-U

Brand: DENSO

DENSO T20EPR-U Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Q16PR-ZU11

Brand: DENSO

DENSO Q16PR-ZU11 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W22EBR

Brand: DENSO

DENSO W22EBR Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 002 G40 512

Brand: BOSCH

BOSCH F 002 G40 512 Spark Plug

Connector type : Gewindebolzen M4, Electrode ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W14F-U10

Brand: DENSO

DENSO W14F-U10 Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z51

Brand: Beru By Driv

BERU by DRiV Z51 Spark Plug

Thread Size : M14x1,25, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 245 536

Brand: BOSCH

BOSCH 0 242 245 536 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: Z26

Brand: Beru By Driv

BERU by DRiV Z26 Spark Plug

Thread Size : M14x1,25, Connector type : SAE, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 236 659

Brand: BOSCH

BOSCH 0 242 236 659 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 240 683

Brand: BOSCH

BOSCH 0 242 240 683 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 000 KE0 P03

Brand: BOSCH

BOSCH F 000 KE0 P03 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 229 884

Brand: BOSCH

BOSCH 0 242 229 884 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 235 764

Brand: BOSCH

BOSCH 0 241 235 764 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 225 962

Brand: BOSCH

BOSCH 0 242 225 962 Spark Plug

Number of Poles : 1, Spanner Size : 20,8, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W27ESR-U

Brand: DENSO

DENSO W27ESR-U Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: K20SR11

Brand: DENSO

DENSO K20SR11 Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 150 504

Brand: BOSCH

BOSCH 0 241 150 504 Spark Plug

Number of Poles : 1, Spanner Size : 17,5, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 230 567

Brand: BOSCH

BOSCH 0 242 230 567 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: KH20TT

Brand: DENSO

DENSO KH20TT Spark Plug

Diameter [mm] : 14, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: W20FPR

Brand: DENSO

DENSO W20FPR Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 242 235 986

Brand: BOSCH

BOSCH 0 242 235 986 Spark Plug

Number of Poles : 1, Spanner Size : 16, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 225/14 LU

Brand: Beru By Driv

BERU by DRiV 225/14 LU Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: W20EXR-U11

Brand: DENSO

DENSO W20EXR-U11 Spark Plug

Diameter [mm] : 14, Spanner Size : 20.6, ...

(0)

Price £0.00
More
Out-of-Stock

Reference: F 005 X19 654

Brand: BOSCH

BOSCH F 005 X19 654 Spark Plug

(0)

Price £0.00
More
Out-of-Stock

Reference: Z178

Brand: Beru By Driv

BERU by DRiV Z178 Spark Plug

Thread Size : M18x1,5, Connector type : ...

(0)

Price £0.00
More
Out-of-Stock

Reference: 0 241 245 673

Brand: BOSCH

BOSCH 0 241 245 673 Spark Plug

Number of Poles : 1, Connector type : Napf, ...

(0)

Price £0.00
More
Out-of-Stock

Follow us on Facebook