63222909 usato Motorino d’avviamento, online, prezzo basso, 15 pagina

3

Parti del motorino d’avviamento

Tratto da:Fiat Panda II 1998 1242cm3 60kW ManualeCodice articolo simile

ZM6595

063102021010

063222889010

063222936010

063280060010

063280061010

063721379010

063721396210

101379

101379H

101379K

101379V

102887

104353

10438883

10439832

106377

11021590

11090041

11439832

11681

11969

13050

1542468

1567033

188290

19297N

1986S00940

201056

201170

2131259

2159

220376

220376A

220376R

220421

2374

252075

253283

2S0115

2S0115R

3118787

3118790

3118791

3118792

31282N

3160

318062092

318092082

32726N

3390301000

3826

406501

42114905

438144

446519

458204

460445

46047

46434037

46774417

46800154

46813058

46813064

46816793

46816973

4721640

500023093030

500542093000

500542093270

500542093340

500542093342

500542093500

5010083

5010359

5010359G

5015028

5020282

51772325

517723250

51812501

51832950

51832951

51832952

51890631

51890632

55192483

55192484

55193355

55193356

55201360

63101002

63222889

63222900

63222936

63223109

6595

7785949

8080035

8080202

830510005

8EA012526471

9945557

9S5111000AA

9S5111000AB

A77960

CQ

CSO30111AS

CST10406AS

CST10406GS

CST10A58GS

CST20151AS

CST20151GS

CST20151OS

CST20152GS

CST30141GS

CST30141RS

DSN3035

F032113962

FT74235

H5010083

H5010359

H5010359G

H5015028

H5020282

LRS01726

LRT00145

LUCAS

MAGNETIMARELLI

MT103JM

NRG9098

NRGV2

POWERMAX

QRS1784

S01009SEG

S101321

S102875

S102876

S106246

S114905

S114906

S114938

S114943

S114943A

S114947

S114947A

S114948

S12BH0018

S12BH0018A2

S12BH0790A2

S12HT0019

S12HT0019A2

S12VA0018

S12VA0018A2

S12VA0044

S132953

S132979

SKSTR0330114

ST00750

ST01342

STR005DPSN

STR005KUHN

STX200032R

TTST001130

UNIPOINT

V241250001

WG2174899

WG2174906

WG2196581

WG2361314

WG2470954

WG2472049

WOODAUTO

WST00017

WST02930

ZM

Nerings, SIA

28,07 €

+Consegna: --

IVA inclusa

3

Parti del motorino d’avviamento

Tratto da:Fiat Grande Punto 2026 1242cm3 65kW ManualeCodice articolo simile

ZM6595

063102021010

063222889010

063222936010

063280060010

063280061010

063721379010

063721396210

101379

101379H

101379K

101379V

102887

104353

10438883

10439832

106377

11021590

11090041

11439832

11681

11969

13050

1542468

1567033

188290

19297N

1986S00940

201056

201170

2131259

2159

220376

220376A

220376R

220421

2374

252075

253283

2S0115

2S0115R

3118787

3118790

3118791

3118792

31282N

3160

318062092

318092082

32726N

3390301000

3826

406501

42114905

438144

446519

458204

460445

46047

46434037

46774417

46800154

46813058

46813064

46816793

46816973

4721640

500023093030

500542093000

500542093270

500542093340

500542093342

500542093500

5010083

5010359

5010359G

5015028

5020282

51772325

517723250

51812501

51832950

51832951

51832952

51890631

51890632

55192483

55192484

55193355

55193356

55201360

63101002

63222889

63222900

63222936

63223109

6595

7785949

8080035

8080202

830510005

8EA012526471

9945557

9S5111000AA

9S5111000AB

A77960

CQ

CSO30111AS

CST10406AS

CST10406GS

CST10A58GS

CST20151AS

CST20151GS

CST20151OS

CST20152GS

CST30141GS

CST30141RS

DSN3035

F032113962

FT74235

H5010083

H5010359

H5010359G

H5015028

H5020282

LRS01726

LRT00145

LUCAS

MAGNETIMARELLI

MT103JM

NRG9098

NRGV2

POWERMAX

QRS1784

S01009SEG

S101321

S102875

S102876

S106246

S114905

S114906

S114938

S114943

S114943A

S114947

S114947A

S114948

S12BH0018

S12BH0018A2

S12BH0790A2

S12HT0019

S12HT0019A2

S12VA0018

S12VA0018A2

S12VA0044

S132953

S132979

SKSTR0330114

ST00750

ST01342

STR005DPSN

STR005KUHN

STX200032R

TTST001130

UNIPOINT

V241250001

WG2174899

WG2174906

WG2196581

WG2361314

WG2470954

WG2472049

WOODAUTO

WST00017

WST02930

ZM

Nerings, SIA

28,07 €

+Consegna: --

IVA inclusa

3

Parti del motorino d’avviamento

Tratto da:Fiat 500 1997 1242cm3 69kW ManualeCodice articolo simile

ZM6595

063102021010

063222889010

063222936010

063280060010

063280061010

063721379010

063721396210

101379

101379H

101379K

101379V

102887

104353

10438883

10439832

106377

11021590

11090041

11439832

11681

11969

13050

1542468

1567033

188290

19297N

1986S00940

201056

201170

2131259

2159

220376

220376A

220376R

220421

2374

252075

253283

2S0115

2S0115R

3118787

3118790

3118791

3118792

31282N

3160

318062092

318092082

32726N

3390301000

3826

406501

42114905

438144

446519

458204

460445

46047

46434037

46774417

46800154

46813058

46813064

46816793

46816973

4721640

500023093030

500542093000

500542093270

500542093340

500542093342

500542093500

5010083

5010359

5010359G

5015028

5020282

51772325

517723250

51812501

51832950

51832951

51832952

51890631

51890632

55192483

55192484

55193355

55193356

55201360

63101002

63222889

63222900

63222936

63223109

6595

7785949

8080035

8080202

830510005

8EA012526471

9945557

9S5111000AA

9S5111000AB

A77960

CQ

CSO30111AS

CST10406AS

CST10406GS

CST10A58GS

CST20151AS

CST20151GS

CST20151OS

CST20152GS

CST30141GS

CST30141RS

DSN3035

F032113962

FT74235

H5010083

H5010359

H5010359G

H5015028

H5020282

LRS01726

LRT00145

LUCAS

MAGNETIMARELLI

MT103JM

NRG9098

NRGV2

POWERMAX

QRS1784

S01009SEG

S101321

S102875

S102876

S106246

S114905

S114906

S114938

S114943

S114943A

S114947

S114947A

S114948

S12BH0018

S12BH0018A2

S12BH0790A2

S12HT0019

S12HT0019A2

S12VA0018

S12VA0018A2

S12VA0044

S132953

S132979

SKSTR0330114

ST00750

ST01342

STR005DPSN

STR005KUHN

STX200032R

TTST001130

UNIPOINT

V241250001

WG2174899

WG2174906

WG2196581

WG2361314

WG2470954

WG2472049

WOODAUTO

WST00017

WST02930

ZM

Nerings, SIA

28,07 €

+Consegna: --

IVA inclusa

3

Parti del motorino d’avviamento

Tratto da:Fiat Punto (188) 1993 1242cm3 60kW ManualeCodice articolo simile

ZM6595

063102021010

063222889010

063222936010

063280060010

063280061010

063721379010

063721396210

101379

101379H

101379K

101379V

102887

104353

10438883

10439832

106377

11021590

11090041

11439832

11681

11969

13050

1542468

1567033

188290

19297N

1986S00940

201056

201170

2131259

2159

220376

220376A

220376R

220421

2374

252075

253283

2S0115

2S0115R

3118787

3118790

3118791

3118792

31282N

3160

318062092

318092082

32726N

3390301000

3826

406501

42114905

438144

446519

458204

460445

46047

46434037

46774417

46800154

46813058

46813064

46816793

46816973

4721640

500023093030

500542093000

500542093270

500542093340

500542093342

500542093500

5010083

5010359

5010359G

5015028

5020282

51772325

517723250

51812501

51832950

51832951

51832952

51890631

51890632

55192483

55192484

55193355

55193356

55201360

63101002

63222889

63222900

63222936

63223109

6595

7785949

8080035

8080202

830510005

8EA012526471

9945557

9S5111000AA

9S5111000AB

A77960

CQ

CSO30111AS

CST10406AS

CST10406GS

CST10A58GS

CST20151AS

CST20151GS

CST20151OS

CST20152GS

CST30141GS

CST30141RS

DSN3035

F032113962

FT74235

H5010083

H5010359

H5010359G

H5015028

H5020282

LRS01726

LRT00145

LUCAS

MAGNETIMARELLI

MT103JM

NRG9098

NRGV2

POWERMAX

QRS1784

S01009SEG

S101321

S102875

S102876

S106246

S114905

S114906

S114938

S114943

S114943A

S114947

S114947A

S114948

S12BH0018

S12BH0018A2

S12BH0790A2

S12HT0019

S12HT0019A2

S12VA0018

S12VA0018A2

S12VA0044

S132953

S132979

SKSTR0330114

ST00750

ST01342

STR005DPSN

STR005KUHN

STX200032R

TTST001130

UNIPOINT

V241250001

WG2174899

WG2174906

WG2196581

WG2361314

WG2470954

WG2472049

WOODAUTO

WST00017

WST02930

ZM

Nerings, SIA

28,07 €

+Consegna: --

IVA inclusa

3

Parti del motorino d’avviamento

Tratto da:Fiat Grande Punto 2026 1368cm3 77kW ManualeCodice articolo simile

ZM6595

063102021010

063222889010

063222936010

063280060010

063280061010

063721379010

063721396210

101379

101379H

101379K

101379V

102887

104353

10438883

10439832

106377

11021590

11090041

11439832

11681

11969

13050

1542468

1567033

188290

19297N

1986S00940

201056

201170

2131259

2159

220376

220376A

220376R

220421

2374

252075

253283

2S0115

2S0115R

3118787

3118790

3118791

3118792

31282N

3160

318062092

318092082

32726N

3390301000

3826

406501

42114905

438144

446519

458204

460445

46047

46434037

46774417

46800154

46813058

46813064

46816793

46816973

4721640

500023093030

500542093000

500542093270

500542093340

500542093342

500542093500

5010083

5010359

5010359G

5015028

5020282

51772325

517723250

51812501

51832950

51832951

51832952

51890631

51890632

55192483

55192484

55193355

55193356

55201360

63101002

63222889

63222900

63222936

63223109

6595

7785949

8080035

8080202

830510005

8EA012526471

9945557

9S5111000AA

9S5111000AB

A77960

CQ

CSO30111AS

CST10406AS

CST10406GS

CST10A58GS

CST20151AS

CST20151GS

CST20151OS

CST20152GS

CST30141GS

CST30141RS

DSN3035

F032113962

FT74235

H5010083

H5010359

H5010359G

H5015028

H5020282

LRS01726

LRT00145

LUCAS

MAGNETIMARELLI

MT103JM

NRG9098

NRGV2

POWERMAX

QRS1784

S01009SEG

S101321

S102875

S102876

S106246

S114905

S114906

S114938

S114943

S114943A

S114947

S114947A

S114948

S12BH0018

S12BH0018A2

S12BH0790A2

S12HT0019

S12HT0019A2

S12VA0018

S12VA0018A2

S12VA0044

S132953

S132979

SKSTR0330114

ST00750

ST01342

STR005DPSN

STR005KUHN

STX200032R

TTST001130

UNIPOINT

V241250001

WG2174899

WG2174906

WG2196581

WG2361314

WG2470954

WG2472049

WOODAUTO

WST00017

WST02930

ZM

Nerings, SIA

28,07 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Siena 1993 1372cm3 69kW ManualeCodice articolo simile

CS1043

500008093050

0986010440

0986010441

0986025480

1088SP

10975

11010450

11013620

11090022

11090051

11130392

112124

11520

11680

11895

230091

251184

252051

252210

260225

300121

31146N

318008092

318034092

4054

4054SP

4146SP

42001234

432659

4486SP

455872

460327

46231535

46431502

46473787

46475793

46478224

500008093

500008093SEL

5030159

63103002

63103002SEL

63103003

63103007

63103008

63103023

63111017

63221300

63221401

63221431

63221607

63221637

63222831

63222833

63222901

63223031

63223085

63223101

63223303

66925112

71721230

71721258

7773812

8010440F

8010450F

910440

943221431

943223031

A10440

A10450

A75670

A75990

ACCBS0883

ATL

AZF3530

AZF3547

BOSCHRUIL

CS133

CS883

CST30116AS

CST30116GS

CST30116OS

CST30116RS

DENSO

DRI

DRS0440

DRS3313

DRS3698

DSN586

EAI

EDR

EL25112

ELECTROLOG

ELSTOCK

EUROTEC

FRIESEN

H5030159

HC

HCS1043

HCS133

HCS883

HITACHI

IS0392

LESTER

LRS827

LRT00147

LUCAS

MAGNETIMARELLI

MAHLE

MSN274

MSN302

ND158

NRG37726

NRGV2

PRESTOLITE

PSH

REMY

S102391

S12MA0659A2

S132720

S23069

S27066

S4020

S4020SR

STEMOT

STR0059SA

STR1105SA

STR4051SA

VALEO

Nerings, SIA

81,22 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Siena 1993 1372cm3 69kW ManualeCodice articolo simile

CS1043

500008093050

0986010440

0986010441

0986025480

1088SP

10975

11010450

11013620

11090022

11090051

11130392

112124

11520

11680

11895

230091

251184

252051

252210

260225

300121

31146N

318008092

318034092

4054

4054SP

4146SP

42001234

432659

4486SP

455872

460327

46231535

46431502

46473787

46475793

46478224

500008093

500008093SEL

5030159

63103002

63103002SEL

63103003

63103007

63103008

63103023

63111017

63221300

63221401

63221431

63221607

63221637

63222831

63222833

63222901

63223031

63223085

63223101

63223303

66925112

71721230

71721258

7773812

8010440F

8010450F

910440

943221431

943223031

A10440

A10450

A75670

A75990

ACCBS0883

ATL

AZF3530

AZF3547

BOSCHRUIL

CS133

CS883

CST30116AS

CST30116GS

CST30116OS

CST30116RS

DENSO

DRI

DRS0440

DRS3313

DRS3698

DSN586

EAI

EDR

EL25112

ELECTROLOG

ELSTOCK

EUROTEC

FRIESEN

H5030159

HC

HCS1043

HCS133

HCS883

HITACHI

IS0392

LESTER

LRS827

LRT00147

LUCAS

MAGNETIMARELLI

MAHLE

MSN274

MSN302

ND158

NRG37726

NRGV2

PRESTOLITE

PSH

REMY

S102391

S12MA0659A2

S132720

S23069

S27066

S4020

S4020SR

STEMOT

STR0059SA

STR1105SA

STR4051SA

VALEO

Nerings, SIA

81,22 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Marea 2026 1581cm3 102kW ManualeCodice articolo simile

CS1043

500008093050

0986010440

0986010441

0986025480

1088SP

10975

11010450

11013620

11090022

11090051

11130392

112124

11520

11680

11895

230091

251184

252051

252210

260225

300121

31146N

318008092

318034092

4054

4054SP

4146SP

42001234

432659

4486SP

455872

460327

46231535

46431502

46473787

46475793

46478224

500008093

500008093SEL

5030159

63103002

63103002SEL

63103003

63103007

63103008

63103023

63111017

63221300

63221401

63221431

63221607

63221637

63222831

63222833

63222901

63223031

63223085

63223101

63223303

66925112

71721230

71721258

7773812

8010440F

8010450F

910440

943221431

943223031

A10440

A10450

A75670

A75990

ACCBS0883

ATL

AZF3530

AZF3547

BOSCHRUIL

CS133

CS883

CST30116AS

CST30116GS

CST30116OS

CST30116RS

DENSO

DRI

DRS0440

DRS3313

DRS3698

DSN586

EAI

EDR

EL25112

ELECTROLOG

ELSTOCK

EUROTEC

FRIESEN

H5030159

HC

HCS1043

HCS133

HCS883

HITACHI

IS0392

LESTER

LRS827

LRT00147

LUCAS

MAGNETIMARELLI

MAHLE

MSN274

MSN302

ND158

NRG37726

NRGV2

PRESTOLITE

PSH

REMY

S102391

S12MA0659A2

S132720

S23069

S27066

S4020

S4020SR

STEMOT

STR0059SA

STR1105SA

STR4051SA

VALEO

Nerings, SIA

81,22 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Palio 2026 1581cm3 100kW ManualeCodice articolo simile

CS1043

500008093050

0986010440

0986010441

0986025480

1088SP

10975

11010450

11013620

11090022

11090051

11130392

112124

11520

11680

11895

230091

251184

252051

252210

260225

300121

31146N

318008092

318034092

4054

4054SP

4146SP

42001234

432659

4486SP

455872

460327

46231535

46431502

46473787

46475793

46478224

500008093

500008093SEL

5030159

63103002

63103002SEL

63103003

63103007

63103008

63103023

63111017

63221300

63221401

63221431

63221607

63221637

63222831

63222833

63222901

63223031

63223085

63223101

63223303

66925112

71721230

71721258

7773812

8010440F

8010450F

910440

943221431

943223031

A10440

A10450

A75670

A75990

ACCBS0883

ATL

AZF3530

AZF3547

BOSCHRUIL

CS133

CS883

CST30116AS

CST30116GS

CST30116OS

CST30116RS

DENSO

DRI

DRS0440

DRS3313

DRS3698

DSN586

EAI

EDR

EL25112

ELECTROLOG

ELSTOCK

EUROTEC

FRIESEN

H5030159

HC

HCS1043

HCS133

HCS883

HITACHI

IS0392

LESTER

LRS827

LRT00147

LUCAS

MAGNETIMARELLI

MAHLE

MSN274

MSN302

ND158

NRG37726

NRGV2

PRESTOLITE

PSH

REMY

S102391

S12MA0659A2

S132720

S23069

S27066

S4020

S4020SR

STEMOT

STR0059SA

STR1105SA

STR4051SA

VALEO

Nerings, SIA

81,22 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Bravo - Brava 1993 1370cm3 75kW ManualeCodice articolo simile

10981

063102003010

0986017781

111420

11810

2015014RS

20510146

220179

220179A

220981

252081

31160N

3825

42017781

458230

46419332

46419392

500518093050

500518093265

500518093340

63102003

63222904

71721250

8017781

8212708

8EA737151001

AES1246

AUTOELECTRO

BOSCH

CASCO

CEVAM

CS981

CST30108AS

CST30108GS

CST30108RS

DRS3308

EAA

EAA121314

EAI

ELSTOCK

F032111420

FRIESEN

HCPARTS

HELLA

LAUBER

LRT00146

LUCAS

MAGNETIMARELLI

NLR

NRG15693

NRGV2

POWERMAX

PRESTOLITE

R1778

S102389

SS433

STR52005

STX200216R

VALEO

WOODAUTO

Nerings, SIA

88,00 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Bravo - Brava 1993 1370cm3 80kW ManualeCodice articolo simile

10981

063102003010

0986017781

111420

11810

2015014RS

20510146

220179

220179A

220981

252081

31160N

3825

42017781

458230

46419332

46419392

500518093050

500518093265

500518093340

63102003

63222904

71721250

8017781

8212708

8EA737151001

AES1246

AUTOELECTRO

BOSCH

CASCO

CEVAM

CS981

CST30108AS

CST30108GS

CST30108RS

DRS3308

EAA

EAA121314

EAI

ELSTOCK

F032111420

FRIESEN

HCPARTS

HELLA

LAUBER

LRT00146

LUCAS

MAGNETIMARELLI

NLR

NRG15693

NRGV2

POWERMAX

PRESTOLITE

R1778

S102389

SS433

STR52005

STX200216R

VALEO

WOODAUTO

Nerings, SIA

88,00 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Tempra 1991 1372cm3 57kW ManualeCodice articolo simile

CS1043

500008093050

0986010440

0986010441

0986025480

1088SP

10975

11010450

11013620

11090022

11090051

11130392

112124

11520

11680

11895

230091

251184

252051

252210

260225

300121

31146N

318008092

318034092

4054

4054SP

4146SP

42001234

432659

4486SP

455872

460327

46231535

46431502

46473787

46475793

46478224

500008093

500008093SEL

5030159

63103002

63103002SEL

63103003

63103007

63103008

63103023

63111017

63221300

63221401

63221431

63221607

63221637

63222831

63222833

63222901

63223031

63223085

63223101

63223303

66925112

71721230

71721258

7773812

8010440F

8010450F

910440

943221431

943223031

A10440

A10450

A75670

A75990

ACCBS0883

ATL

AZF3530

AZF3547

BOSCHRUIL

CS133

CS883

CST30116AS

CST30116GS

CST30116OS

CST30116RS

DENSO

DRI

DRS0440

DRS3313

DRS3698

DSN586

EAI

EDR

EL25112

ELECTROLOG

ELSTOCK

EUROTEC

FRIESEN

H5030159

HC

HCS1043

HCS133

HCS883

HITACHI

IS0392

LESTER

LRS827

LRT00147

LUCAS

MAGNETIMARELLI

MAHLE

MSN274

MSN302

ND158

PRESTOLITE

PSH

REMY

S102391

S12MA0659A2

S132720

S23069

S27066

S4020

S4020SR

STEMOT

STR0059SA

STR1105SA

STR4051SA

VALEO

Nerings, SIA

92,05 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Fiorino 1994 1372cm3 49kW ManualeCodice articolo simile

CS1043

500008093050

0986010440

0986010441

0986025480

1088SP

10975

11010450

11013620

11090022

11090051

11130392

112124

11520

11680

11895

230091

251184

252051

252210

260225

300121

31146N

318008092

318034092

4054

4054SP

4146SP

42001234

432659

4486SP

455872

460327

46231535

46431502

46473787

46475793

46478224

500008093

500008093SEL

5030159

63103002

63103002SEL

63103003

63103007

63103008

63103023

63111017

63221300

63221401

63221431

63221607

63221637

63222831

63222833

63222901

63223031

63223085

63223101

63223303

66925112

71721230

71721258

7773812

8010440F

8010450F

910440

943221431

943223031

A10440

A10450

A75670

A75990

ACCBS0883

ATL

AZF3530

AZF3547

BOSCHRUIL

CS133

CS883

CST30116AS

CST30116GS

CST30116OS

CST30116RS

DENSO

DRI

DRS0440

DRS3313

DRS3698

DSN586

EAI

EDR

EL25112

ELECTROLOG

ELSTOCK

EUROTEC

FRIESEN

H5030159

HC

HCS1043

HCS133

HCS883

HITACHI

IS0392

LESTER

LRS827

LRT00147

LUCAS

MAGNETIMARELLI

MAHLE

MSN274

MSN302

ND158

PRESTOLITE

PSH

REMY

S102391

S12MA0659A2

S132720

S23069

S27066

S4020

S4020SR

STEMOT

STR0059SA

STR1105SA

STR4051SA

VALEO

Nerings, SIA

92,05 €

+Consegna: --

IVA inclusa

6

Motorino d’avviamento

Tratto da:Fiat Siena 1996 1400cm3 51kW Benzina ManualeCodice articolo simile

63103003

CS1043

0986010440

0986010441

0986025480

1088SP

11010450

11013620

11090022

11090051

11130392

112124

11520

11680

11895

230091

251184

252051

252210

260225

318008092

318034092

4054

4054SP

4146SP

432659

4486SP

455872

46231535

46475793

500008093

500008093SEL

63103002

63103002SEL

63103007

63103008

63103023

63111017

63221300

63221401

63221431

63221607

63221637

63222831

63222833

63222901

63223031

63223085

63223101

63223303

66925112

7773812

8010440F

8010450F

910440

943221431

943223031

A10440

A10450

A75670

A75990

AZF3530

AZF3547

CS133

CS883

DRS0440

DRS3313

DRS3698

DSN586

EL25112

HCS1043

HCS133

HCS883

IS0392

LRS827

LRT00147

MSN274

MSN302

ND158

S23069

S27066

STR0059SA

STR1105SA

STR4051SA

Nerings, SIA

105,09 €

+Consegna: --

IVA inclusa