Wał korbowy 139QMB - Skuter 4T Power Force 16Z

Wał korbowy do skuterów 4T z silnikami 139QMB z zębatką pompy oleju 16 zębów.

UWAGA!!! - ten wał korbowy ma zebatkę pompy oleju 16 zębów. ( Niektóre skutery mają zębatki 22 zęby. Przed zakupem, prosimy o sprawdzenie tego elementu. )

CECHY

• wał korbowy wzmocniony - wytrzymuje powiększone pojemności cylindra 50cm3 60cm3 70cm3 80cm3 90cm3
• staranie wykonany, wyważony i sprawdzony przed pakowaniem
• w zestawie naprasowane już na wał, łożyska wału, oraz zebatki, od rozrządu i pompy oleju
• całość gotowa do montażu
• zębatka pompy oleju 16 zębów

ZESTAW ZAWIERA

• wyważony, kompletny wał korbowy
• łożyska wału - już naprasowane na wał
• zębatki pompy oleju i rozrządu - już naprasowane na wał
• klin na wał od strony koła magnesowego

WYMIARY ( dokładne wymiary podane na jedym ze zdjęć )

• ilość zębów zębatki pompy oleju: 16
• ilość zębów zębatki rozrządu: 17
• średnica sworznia tłoka: 13mm
• stożek koła magnesowego: 11mm / 21mm
• gwint od strony koła magnesowego: M10
• gwint od strony wariatora: M12
• pozostałe wymiary dokładne na jedym ze zdjęć

ZASTOSOWANIE

ATX MOTOR

• ATX Beskid 1 50 4T
  
• ATX Motor Beskid 2 50 4T
  
• ATX Motor Beskid Sport 50 4T
  
• ATX Motor Best 50 4T
  
• ATX Motor Bizon 50 4T
  
• ATX Motor Black Edition 50 4T
  
• ATX Motor Condor 50 4T
  
• ATX Motor Dolphin 50 4T
  
• ATX Motor Max 50 4T
  
• ATX Motor Milano 50 4T
  
• ATX Motor Orzeł 50 4T
  
• ATX Motor,Red Power 50 4T
  
• ATX Motor Roma 1 50 4T
  
• ATX Motor Roma 2 50 4T
  
• ATX Motor Sharp 50 4T
  
• ATX Motor Top Speed 50 4T
  
• ATX Motor Torino 50 4T
  
• ATX Motor Wind 50 4T

AZT MOTOR

• ATZ Euroscooter 50 4T

ADAMOTO

• Adamoto Cetos 50 4T
  
• Adamoto Civitas 150 4T
  
• Adamoto Faster 50 4T
  
• Adamoto Retro 50 4T
  
• Adamoto Speeder 50 4T

AZEL

• Azel Aries 50 4T 49 2009-2010
  
• Azel Diamond 4T 50 4T

BACCARI

• Baccari Fenix 150 4T
  
• Baccari Flash 50 4T
  
• Baccari X-Flash 50 4T
  
• Baccari Zondar 50 4T

BAJA

• Baja BE500 50 4T
  
• Baja Suncity SC VIN LAW/LXKS 50 4T
  
• Baja Suncity SC VIN LWGT 50 4T

BAOTIAN

• Baotian BT49QT-11DA 49 4T 2008-2014
  
• Baotian BT49QT-12C1 Rebel 49 4T 2006-2014
  
• Baotian BT49QT-12D1 Hero 49 4T 2007-2014
  
• Baotian BT49QT-12E3 Rocky 49 4T 2007-2014
  
• Baotian BT49QT-12F1 Tanco 49 4T 2007-2014
  
• Baotian BT49QT-12G1 49 4T 2009-2014
  
• Baotian BT49QT-12P1 Tiger 49 4T 2008-2014
  
• Baotian BT49QT-20 Freedo 6 50 4T
  
• Baotian BT49QT-20A2 Terminator 49 4T 2009-2012
  
• Baotian BT49QT-2A Big Panther 49 4T 2006-2014
  
• Baotian BT49QT-2C Falcon 49 4T 2009-2014
  
• Baotian BT49QT-3 49 4T 2005-2008
  
• Baotian BT49QT-6A1 49 4T 2009-2014
  
• Baotian BT49QT-6A4 49 4T 2013-2014
  
• Baotian BT49QT-6B1 49 4T 2009-2014
  
• Baotian BT49QT-6B4 49 4T 2009-2014
  
• Baotian BT49QT-7A Smart Rider 49 4T 2005-2013
  
• Baotian,BT49QT-9 Sprint 49 4T 2006-2013
  
• Baotian BT49QT-9F1 Eagle 49 4T 2009-2014
  
• Baotian BT49QT-9F3 Eagle 49 4T 2009-2014
  
• Baotian BT49QT-9R1 Speedy 49 4T 2009-2014
  
• Baotian BT49QT-9R3 Speedy 49 4T 2009-2014
  
• Baotian BT49QT-9S1 Super Moto/City 49 4T 2009-2014
  
• Baotian BT49QT-9S3 Super Moto/City 49 4T 2009-2014
  
• Baotian BT50QT-11 Retro 1 plaza 49 4T 2005-2007
  
• Baotian BT50QT-9 (Ecobike) 50 4T

BARTON

• Barton 21 50 4T
  
• Barton Atomic 50 4T
  
• Barton Challenger 50 4T
  
• Barton Citizen 50 4T
  
• Barton Fox 50 4T
  
• Barton GTR 1 50 4T
  
• Barton GTR 2 50 4T
  
• Barton Huragan 1 50 4T
  
• Barton Huragan 2,3,4,5 50 4T
  
• Barton Pony 50 4T
  
• Barton Rebel 50 4T
  
• Barton Rocky 50 4T
  
• Barton Tiger 50 4T

BENDA

• Benda Beauty 50 4T
  
• Benda Benson 50 4T
  
• Benda Buzzard 50 4T
  
• Benda Grace 50 4T
  
• Benda Hero 50 4T
  
• Benda Hunter 50 4T
  
• Benda Origin 50 4T
  
• Benda Owl 50 4T
  
• Benda Royal 50 4T
  
• Benda Salsa 50 4T
  
• Benda Smart 50 4T
  
• Benda Vento 50 4T
  
• Benda Wind 50 4T
  
• Benda Young 50 4T

BENZER

• Benzer Barnet GP 50 4T
  
• Benzer Columbia 50 4T
  
• Benzer Dacota 50 4T
  
• Benzer Daytona 50 4T
  
• Benzer Florida 50 4T
  
• Benzer Indiana 50 4T
  
• Benzer Mastic 50 4T
  
• Benzer Oregon 50 4T
  
• Benzer Quebec 50 4T
  
• Benzer Syracuse 50 4T

BOXER

• Boxter Binq 50 4T
  
• Boxter Comandos 50 4T
  
• Boxter Extreme 50 4T
  
• Boxter Fusion 50 4T
  
• Boxter GP 50 4T
  
• Boxter Galox 50 4T
  
• Boxter Mascot 50 4T
  
• Boxter Maxis 50 4T
  
• Boxter Racer 50 4T
  
• Boxter Sprinkler 50 4T

CITI BIKE

• Citi Bike I 50 4T
  
• Citi Bike II 50 4T
  
• Citi Bike Sport 50 4T

CORSER

• Corser ZN50QT-15C 50 4T
  
• Corser ZN50QT-15C S 50 4T
  
• Corser ZN50QT-15D 50 4T
  
• Corser ZN50QT-15E 50 4T

DAZON

• Dazon Diamondback 50 4T
  
• Dynamic Twister 50 4T

ECOBIKE

• Ecobike BT49QT-9F3 50
  
• Ecobike BT50QT-11 Retro 1 Sitzer 50
  
• Ecobike BT50QT-7 50 4T Panther II 49 2005-2007
  
• Ecobike BT50QT-9N 50 4T Speedy 49 2007-2010

EPPELLA / ECM

• Eppella / ECM GMX 1 50 4T

ERING

• Ering Smart 4T

FYM

• FYM FY50QT-5 50 4T

FASPIDER

• Faspider Roma 50 4T

FERRO

• Ferro 301 50 4T
  
• Ferro 302 50 4T
  
• Ferro 303 50 4T
  
• Ferro 601 50 4T
  
• Ferro 602 50 4T
  
• Ferro 603 50 4T
  
• Ferro 604 50 4T
  
• Ferro 605 50 4T

FLEX

• Flex Tech Dolphin 1 50 4T
  
• Flex Tech Fun 1 50 4T
  
• Flex Tech Hurrican X1 50 4T
  
• Flex Tech Hurrican X2 50 4T
  
• Flex Tech Sprint 10 50 4T
  
• Flex Tech Sprint 12 1 50 4T
  
• Flex Tech Topdrive 1 50 4T
  
• Flex Tech Venus 50 4T

FLY SCOOTERS

• Fly Scooters IL Bello 50 4T

FUTONG

• Futong FT50QT-10 50 4T
  
• Futong FT50QT-14 50 4T
  
• Futong FT50QT-3 50 4T
  
• Futong FT50QT-3F 50 4T
  
• Futong FT50QT-7C 50 4T
  
• Futong FT50QT4 50 4T

GB MOTORS

• GB Motors Beast 1 50 4T
  
• GB Motors Blade 1 50 4T
  
• GB Motors Cruiser 1 50 4T
  
• GB Motors Cyclone 1 50 4T
  
• GB Motors First 1 50 4T
  
• GB Motors Neox 1 50 4T
  
• GB Motors Pinacolada 1 50 4T
  
• GB Motors Razor 1 50 4T
  
• GB Motors Rocket 1 50 4T
  
• GB Motors Roxket 50 4T
  
• GB Motors Spark 1 50 4T
  
• GB Motors Street 1 50 4T
  
• GB Motors Thunder 1 50 4T
  
• GB Motors Tiger Max 1 50 4T
  
• GB Motors Virus 1 50 4T

GATEWAY

• Gateway Speedy 50 4T Fighter
  

GIGANTCO

• Giantco Sprint City 50
  
• Giantco Venus I 1 50 4T
  
• Giantco Venus II 1 50 4T

GORILLA MOTOR

• Gorilla Motor Works Black Jack 1 50 4T

HORN

• Horn Aquilla 50 4T
  
• Horn Ferrara 1 50 4T
  
• Horn Ferrara 2 50 4T
  
• Horn Freccia 50 4T
  
• Horn Grizzly 50 4T
  
• Horn Marcello 50 4T
  
• Horn Otello 50 4T
  
• Horn Roma 50 4T
  
• Horn Trendy 50 4T
  
• Horn Ultimo 50 4T
  
• Horn Ultimo 2 50 4T

HUATIAN / LINTEX

• Huatian/ Lintex HT50QT-10 50
  
• Huatian / Lintex HT50QT-16 50
  
• Huatian / Lintex HT50QT-22 50
  
• Huatian / Lintex HT50QT-26 50
  
• Huatian / Lintex HT50QT-36 50 4T
  
• Huatian / Lintex HT50QT-6 50 4T
  
• Huatian / Lintex HT50QT-7 50 4T
  
• Huatian / Lintex HT50QT-9 50

IMPEXTA

• Impexta Clea 50 4T
  
• Impexta Cobi 50 4T
  
• Impexta Desire 50 4T
  
• Impexta Speedy E 50 4T

INCA

• Inca Sprint 50 4T
  
• Inca Wiki 50 4T

JINLUN

• Jinlun JL50QT-4 49 4T 2008-2013
  
• Jinlun JL50QT-4D 50 1 50
  
• Jinlun JL50QT-5 49 4T 2005-2013
  
• Jinlun JL50QT-5B 49 4T 2008-2011
  
• Jinlun JL50QT-5C 49 4T 2008-2011
  
• Jinlun JL50QT-6 49 4T 2008-2013
  
• Jinlun JL50QT-6A 49 4T 2010-2013
  
• Jinlun JL50QT-6C 49 4T 2010-2011
  
• Jinlun JL50QT-6D 49 4T 2010-2011
  
• Jinlun JL50QT-7 49 4T 2008-2013
  
• Jinlun JL50QT-8 49 4T 2008-2013
  
• Jinlun JL50QT-9 49 4T 2009-2013

JMSTAR

• Jmstar Accipiter 50 4T 49 2009
  
• Jmstar BO9 Sunfire Racing 50 4T
  
• Jmstar Breeze 50 4T 49 2008-2012
  
• Jmstar Eagle 50 4T
  
• Jmstar Falcon 50 4T 49 2009-2014
  
• Jmstar Solana 50 4T
  
• Jmstar Z-Bike 50 4T 49 2009
  
• Jmstar Zeus 50 4T

JONWAY

• Jonway Eagle 50 4T
  
• Jonway Shotgun 50 4T
  
• Jonway Sunny 50 4T
  
• Jonway Via 50 4T
  
• Jonway YY50QT-2 50 4T

JUNAK

• Junak 106 50 4T
  
• Junak 304 50 4T
  
• Junak 607 50 4T
  
• Junak Vintage 50 4T

KARCHER

• Karcher KM 50 4T

KENTOYA

• Kentoya Sole Mio 50 4T
• Kentoya Zoom 50 4T

KINGWAY

• Kingway Aeon 50 4T
  
• Kingway Alien 50 4T
  
• Kingway Allegro 50 4T
  
• Kingway Black Horse 50 4T
  
• Kingway Camaro 50 4T
  
• Kingway Cereno 50 4T
  
• Kingway Chinaboy 50 4T
  
• Kingway Cobra 50 4T
  
• Kingway Cobus 50 4T
  
• Kingway Coliber 1 50 4T
  
• Kingway Coliber Classic 50 4T
  
• Kingway Coliber Fartt 50 4T
  
• Kingway Coliber Rex 50 4T
  
• Kingway Coliber Smartt 50 4T
  
• Kingway Coliber Sport
  
• Kingway Commander
  
• Kingway Condor
  
• Kingway Corvette
  
• Kingway Crossfire
  
• Kingway Cub Cuba
  
• Kingway Cub Father
  
• Kingway Cub Sport
  
• Kingway El Passo
  
• Kingway Falcon
  
• Kingway Fennari
  
• Kingway Fiesta
  
• Kingway Fonero
  
• Kingway Forever
  
• Kingway Fox
  
• Kingway Gallus
  
• Kingway Guliver
  
• Kingway Hooligan
  
• Kingway Ibis
  
• Kingway Koyot
  
• Kingway Martinelli
  
• Kingway Maximus
• Kingway Mosquito
  
• Kingway Paulo
  
• Kingway Poster
  
• Kingway Quattro
  
• Kingway Qurier
  
• Kingway Rocky 50 4T
  
• Kingway Shark 50 4T
  
• Kingway Street 50 4T
  
• Kingway Swift
  
• Kingway Tiggero
  
• Kingway Tommy
  
• Kingway Touran
  
• Kingway Varadero
  
• Kingway Vezyr
  
• Kingway Yuxin
  
• Kingway Zibo

KINROAD

• Kinroad (Xintian) Delfin
  
• Kinroad (Xintian) XT50QT-2 50 4T
  
• Kinroad (Xintian) XT50QT-2A (10 cali)
  
• Kinroad (Xintian) XT50QT-2A (12 cali)
  
• Kinroad (Xintian) XT50QT-B 50 4T

KREIDLER

• Kreidler RMC E

LINGBEN

• Lingben LB50QT-16
  
• Lingben LB50QT-18 50
  
• Lingben LB50QT-20 50
  
• Lingben LB50QT-35 50
  
• Lingben LB50QT-6 50

LONGBO

• Longbo LB50QT-22
  
• Longbo LB50QT-6

LONGIJA

• Longjia Digital 50 4T
  
• Longjia Estate 50 4T
  
• Longjia LJ50QT-4 50 4T
  
• Longjia LJ50QT-E 50 4T 49 2010-2013
  
• Longjia LJ50QT-L 50 4T
  
• Longjia Trevis 50 4T

MSK

• MSK Ecobike 50 4T

MASSIMO

• Massimo SL50QT-2 50 4T

MAVER

• Maver Action 50 4T
  
• Maver Swing 50 4T

MAWI

• Mawi City Spider 50 4T
  
• Mawi Speed Racer 50 4T
  
• Mawi Street Race 50 4T
  
• Mawi Super Power 50 4T

MOTO MAGNUS

• Moto Magnus Capro 50 4T
  
• Moto Magnus Carave 50 4T
  
• Moto Magnus Ibizzo 50 4T
  
• Moto Magnus Rally 50 4T
  
• Moto Magnus Retro 50 4T
  
• Moto Magnus Solatio 50 4T
  
• Moto Magnus Subire 50 4T
  
• Moto Magnus Verso 50 4T
  
• Moto Magnus Solatio
  
• Moto Magnus Carave
  
• Moto Magnus Capro
  
• Moto Magnus Ibizzo
  
• Moto Magnus Nitrox
  
• Moto Magnus Subire
  
• Moto Magnus Verso

MOTO VENTUS

• Moto Ventus Camera 50 4T
  
• Moto Ventus Grand 50 4T
  
• Moto Ventus Grando 50 4T
  
• Moto Ventus Modo 1 50 4T
  
• Moto Ventus Modo 2 50 4T
  
• Moto Ventus Prymus 1 50 4T
  
• Moto Ventus Prymus 2 50 4T
  
• Moto Ventus Rally 50 4T
  
• Moto Ventus Skyline 50 4T
  
• Moto Ventus Sport 50 4T

MOTO ZETA

• Moto Zeta Rally 50 4T

MOTOBI

• Motobi Flaming 50 4T
  
• Motobi Huzar 50 4T
  
• Motobi Orlik 1 50 4T
  
• Motobi Orlik 2 50 4T
  
• Motobi Rocky 50 4T
  
• Motobi Sowa 1 50 4T
  
• Motobi Sowa 2 50 4T
  
• Motobi Spider 50 4T
  
• Motobi Sprint 1 50 4T
  
• Motobi Sprint 2 50 4T
  
• Motobi Wilga 1 50 4T
  
• Motobi Wilga 2 50 4T
  
• Motobi Wilga 3 50 4T
  
• Motobi Żbik 1 50 4T
  
• Motobi Żbik 2 50 4T

MOTOFINO

• Motofino MF50QT 50 4T
  
• Motofino MF50QT-2 50 4T
  
• Motofino MF50QT-7 50 4T

MOTOMAR

• Motomar Blade 50 4T
  
• Motomar Forester 50 4T
  
• Motomar Hero 50 4T
  
• Motomar Master 1 50 4T
  
• Motomar Master 2 50 4T
  
• Motomar Radi 50 4T
  
• Motomar Rocky 50 4T
  
• Motomar Supremo 50 4T
  
• Motomar Todi 50 4T
  
• Motomar Vision 1 50 4T
  
• Motomar Vision 2 50 4T
  
• Motomar Yazoo 50 4T

MOTORRO

• Motorro Clea 50 4T
  
• Motorro Cobi 50 4T
  
• Motorro Desire 50 4T
  
• Motorro Hawk 50 4T
  
• Motorro Speedy 50 4T
  
• Motorro Speedy E 50 4T

MOTORTEK

• Motortek Raccon 50 4T

MOTOWAY

• Motoway VX 5 City 50 4T
  
• Motoway XR 7 50 4T

MOTOWELL

• Motowell Magnet 50 4T
  
• Motowell Magnet City 50 4T
  
• Motowell Yoyo 50 4T 49 2010-2014

PEDA

• Peda Rally 50 4T
  
• Peda Via Warrior 50 4T

PUMA

• Puma Juliet 50 4T
  
• Puma La Vida 50 4T
  
• Puma Romeo 50 4T

QINGQI

• Qingqi (Jinan Qingqi) QM50QT-10A 50 4T
  
• Qingqi (Jinan Qingqi) QM50QT-6A 50 4T
  
• Qingqi (Jinan Qingqi) QM50QT-6A Capriolo 50 4T
  
• Qingqi (Jinan Qingqi) QM50QT-6A A 50 4T
  
• Qingqi (Jinan Qingqi) QM50T-10A B 50 4T
  
• Qingqi (Jinan Qingqi) QM50T-10R 50 4T
  
• Qingqi (Jinan Qingqi) RS 400 50 4T
  
• Qingqi (Jinan Qingqi) RS 450 50 4T
  
• Qingqi (Jinan Qingqi) RS 460
  
• Qingqi (Jinan Qingqi) RS 500 50 4T
  
• Qingqi (Jinan Qingqi) RS 900 QM50T-10A (A) 50 4T

QUEST

• Quest Q2 1 50 4T
  
• Quest Q3 50 4T
  
• Quest Q3 1 50 4T
  
• Quest Q5 50 4T
  
• Quest Q7 50 4T
  
• Quest Q7 1 50 4T
  
• Quest Q9 50 4T
  
• Quest Q9 1 50 4T

RM MOTOR

• RM Motor Blade 50 4T
  
• RM Motor Fox 50 4T
  
• RM Motor Oxygen 50 4T
  
• RM Motor Pepper 50 4T
  
• RM Motor RS 50 4T
  
• RM Motor Viper 50 4T

REX

• Rex Capriolo 50 4T 49 2007-2009
  
• Rex RS 1 250 2T
  
• Rex RS 450 50 1 50
  
• Rex RS 500 50 1 50

ROKETA

• Roketa Bahama MC-07 50 4T
  
• Roketa Maui MC-08 50 4T

ROMET

• Romet 717 -2010 50 4T
  
• Romet 717 2010- 50 4T
  
• Romet 727 50 4T do 2008
  
• Romet 727 ECO 50 4T
  
• Romet 727 JOY 50 4T
  
• Romet 727 Komfort 50 4T
  
• Romet 727 Premium 50 4T
  
• Romet 747 50 4T
  
• Romet 757 50 4T
  
• Romet 767 -2010 50 4T
  
• Romet 777 50 4T
  
• Romet 787 50 4T
  
• Romet Delivery 50 4T
  
• Romet Latte City 50 4T
  
• Romet RXL ECO -2009 50 4T
  
• Romet Retro 6 50 4T
  
• Romet Retro 7 50 4T

ROUTER

• Router Bassa 50 4T 2011
  
• Router Bassa 50 4T 2012
  
• Router City Line 50 4T
  
• Router Classa 50 4T
  
• Router Grande Lux 50 4T
  
• Router Metro City 50 4T
  
• Router Pluss 50 4T
  
• Router Retro VSP 50 4T
  
• Router Sport S 50 4T
  
• Router Traffico 2 50 4T
  
• Router Traffico XM 50 4T
  
• Router Traffico XS 50 4T
  
• Router XM 50 4T

SACHS

• Sachs 49er 1 50 4T
  
• Sachs Bee 50

SCHWINN

• Schwinn Newport 50 4T

SUKIDA

• Sukida Dolphin 50 4T
  
• Sukida Roma 50 4T
  
• Sukida Sprint 10 50 4T
  
• Sukida Sprint 12 50 4T
  
• Sukida Venus 50 4T

SUNL

• SunL SL50QT-2 50 4T
  
• SunL SL50QT-7 50 4T

TNG

• TNG Low Boy

TNT

• TNT Roma 50 4T

TANK

• Tank Sporty 50 4T
  
• Tank Urban 50 4T

TAOTAO

• TaoTao ATM 50 4T

TOROS

• Toros Eco 50 4T
  
• Toros F16 50 4T
  
• Toros Fresco 50 4T
  
• Toros GP500 50 4T
  
• Toros Steed 50 4T
  
• Toros X7 50 4T
  
• Toros el Diablo 50 4T
  
• Toros el Loco 50 4T

ULTIMAR

• Ultimar Speed 50 4T

XINGLING

• Xingling XL50QT-B 50 4T
  
• Xinling XL50QT-B 50 4T
  
• Xintian XT50QT 50 4T

YLSMCO

• Ylsmco Quest I 50 4T
  
• Ylsmco Quest II 50 4T

YUKIMOTO

• Yukimoto Dragon 50 4T
  
• Yukimoto Drakiwa 50 4T
  
• Yukimoto Pride 50 4T
  
• Yukimoto Rally 50 4T
  
• Yukimoto Ruby 50 4T
  
• Yukimoto Shotgun 50 4T
  
• Yukimoto Speedy 50 4T
  
• Yukimoto Whip 50 4T

ZHONGYU

• Zhongyu Zhongyu 50 4T

ZIPP

• Zipp Astec
  
• Zipp Basic
  
• Zipp Otis
  
• Zipp Rally
  
• Zipp Steed
  
• Zipp Tops
  
• Zipp Toxic
  
• Zipp Triad I
  
• Zipp Triad II
  
• Zipp Vapor 50 4T 2011-
  
• Zipp Vapor 50 4T 2007-2008
  
• Zipp Vapor 50 4T 2009-2010
  
• Zipp Vega

ZONGSHEN

• Zongshen Cab 50
  
• Zongshen ZS 50QT-4 50 4T

ZUMICO

• Zumico Avatar
  
• Zumico Dynamic
  
• Zumico Mac
  
• Zumico Quick
  
• Zumico Shiva