Sold Out
HKS Air Fuel Knock Amp AFK Wideband Controller
Couldn't load pickup availability
Refresh
Sold by Carkart, an authorized reseller.
Returns accepted within 30 days | support@digipbestlanet.com
Verified
Shipping Information
Shipping calculated at checkout
Shipping cost and estimated delivery for this item will be shown at checkout based on your location.
Processing Time: 1–3 business days
Tracking number sent via email once dispatched
Orders over $250 require signature upon delivery.
Taxes calculated at checkout.
Returns & Refund
Returns accepted within 30 days of delivery.
Damaged or Defective Item
Free return shipping + replacement or full refund
Wrong Item Received
Free return shipping + replacement or full refund
Change of Mind
Return shipping at customer's expense · 25% restocking fee applies
Return Authorization (RA) number before sending.
View Full Return & Refund Policy
⚠️ California Proposition 65 Warning :
Your Cart
Item(s):
Total: $31.80
HKS Air Fuel Knock Amp AFK Wideband Controller
$1,025.00
Sold Out
HKS 44006-AK003 Air Fuel Knock Amp AFK Wideband Controller
Redesigned for 2008, the all new generation of the A/F Knock Amp, known as the AFK, now includes a new HKS AF sensor where the air/fuel ratio can be monitored accurately on the display. The AFK can now monitor and display dual A/F readings with the purchase of an additional AF sensor. The redesign of the new AFK features a sleek black case with a clear acrylic faceplate and a positive lit LCD offering a sophisticated look to match the new EVC.
The HKS AFK is an electronic monitoring device that displays two of the most vital engine conditions; engine knock and air/fuel ratio. Knock occurs when there is abnormal engine combustion, known as detonation, caused by a combination of improper A/F ratios and ignition spark. This can rob power, reduce engine longevity and even lead to catastrophic failure. The A/F Knock Amp utilizes the factory knock sensor allowing you to monitor, in real time, engine knock visually and audibly via headphones (not included). A warning function can be set for both engine knock and air/fuel ratio where an audible alert sounds if the preset warning is reached.
Includes a plug and play HKS AF sensor (no modifications or atmospheric calibration necessary).Simultaneous dual A/F monitoring.
Simultaneous dual A/F monitoring.
Additional sensor required for dual A/F monitoring (Sold Separately)
Easier set-up for Knock Detection.
Sleek and clear acrylic faceplate with positive lit LCD display to match the new EVC.
FAQs
Have a question ? We are here to help.
Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days . Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
<div class="dynamic-checkout__content" id="dynamic-checkout-cart" data-shopify="dynamic-checkout-cart"> <shopify-accelerated-checkout-cart wallet-configs="[{"supports_subs":true,"supports_def_opts":false,"name":"shop_pay","wallet_params":{"shopId":69204410420,"merchantName":"Carkart","personalized":true}},{"supports_subs":false,"supports_def_opts":false,"name":"amazon_pay","wallet_params":{"checkoutLanguage":"en_US","ledgerCurrency":"USD","placement":"Cart","sandbox":false,"merchantId":"A1ONOTYM25CI4M","productType":"PayAndShip","design":"C0002"}},{"supports_subs":true,"supports_def_opts":false,"name":"paypal","wallet_params":{"shopId":69204410420,"countryCode":"US","merchantName":"Carkart","phoneRequired":true,"companyRequired":false,"shippingType":"shipping","shopifyPaymentsEnabled":true,"hasManagedSellingPlanState":false,"requiresBillingAgreement":false,"gatewayType":"MANAGED","merchantId":"PZG6E6657YATJ","sdkUrl":"https://www.paypal.com/sdk/js?components=buttons\u0026commit=false\u0026currency=USD\u0026locale=en_US\u0026client-id=AbasDhzlU0HbpiStJiN1KRJ_cNJJ7xYBip7JJoMO0GQpLi8ePNgdbLXkC7_KMeyTg8tnAKW4WKrh9qmf\u0026merchant-id=PZG6E6657YATJ\u0026intent=authorize","serviceableCountryCodes":["AC","AD","AE","AF","AG","AI","AL","AM","AO","AR","AT","AU","AW","AX","AZ","BA","BB","BD","BE","BF","BG","BH","BI","BJ","BL","BM","BN","BO","BQ","BR","BS","BT","BW","BY","BZ","CA","CC","CD","CF","CG","CH","CI","CK","CL","CM","CN","CO","CR","CV","CW","CX","CY","CZ","DE","DJ","DK","DM","DO","DZ","EC","EE","EG","EH","ER","ES","ET","FI","FJ","FK","FO","FR","GA","GB","GD","GE","GF","GG","GH","GI","GL","GM","GN","GP","GQ","GR","GS","GT","GW","GY","HK","HN","HR","HT","HU","ID","IE","IL","IM","IN","IO","IQ","IS","IT","JE","JM","JO","JP","KE","KG","KH","KI","KM","KN","KR","KW","KY","KZ","LA","LB","LC","LI","LK","LR","LS","LT","LU","LV","LY","MA","MC","MD","ME","MF","MG","MK","ML","MM","MN","MO","MQ","MR","MS","MT","MU","MV","MW","MX","MY","MZ","NA","NC","NE","NF","NG","NI","NL","NO","NP","NR","NU","NZ","OM","PA","PE","PF","PG","PH","PK","PL","PM","PN","PS","PT","PY","QA","RE","RO","RS","RU","RW","SA","SB","SC","SD","SE","SG","SH","SI","SJ","SK","SL","SM","SN","SO","SR","SS","ST","SV","SX","SZ","TA","TC","TD","TF","TG","TH","TJ","TK","TL","TM","TN","TO","TR","TT","TV","TW","TZ","UA","UG","UM","US","UY","UZ","VA","VC","VE","VG","VN","VU","WF","WS","XK","YE","YT","ZA","ZM","ZW"]}},{"supports_subs":true,"supports_def_opts":false,"name":"google_pay","wallet_params":{"sdkUrl":"https://pay.google.com/gp/p/js/pay.js","paymentData":{"apiVersion":2,"apiVersionMinor":0,"shippingAddressParameters":{"allowedCountryCodes":["AC","AD","AE","AF","AG","AI","AL","AM","AO","AR","AT","AU","AW","AX","AZ","BA","BB","BD","BE","BF","BG","BH","BI","BJ","BL","BM","BN","BO","BQ","BR","BS","BT","BW","BY","BZ","CA","CC","CD","CF","CG","CH","CI","CK","CL","CM","CN","CO","CR","CV","CW","CX","CY","CZ","DE","DJ","DK","DM","DO","DZ","EC","EE","EG","EH","ER","ES","ET","FI","FJ","FK","FO","FR","GA","GB","GD","GE","GF","GG","GH","GI","GL","GM","GN","GP","GQ","GR","GS","GT","GW","GY","HK","HN","HR","HT","HU","ID","IE","IL","IM","IN","IO","IQ","IS","IT","JE","JM","JO","JP","KE","KG","KH","KI","KM","KN","KR","KW","KY","KZ","LA","LB","LC","LI","LK","LR","LS","LT","LU","LV","LY","MA","MC","MD","ME","MF","MG","MK","ML","MM","MN","MO","MQ","MR","MS","MT","MU","MV","MW","MX","MY","MZ","NA","NC","NE","NF","NG","NI","NL","NO","NP","NR","NU","NZ","OM","PA","PE","PF","PG","PH","PK","PL","PM","PN","PS","PT","PY","QA","RE","RO","RS","RU","RW","SA","SB","SC","SD","SE","SG","SH","SI","SJ","SK","SL","SM","SN","SO","SR","SS","ST","SV","SX","SZ","TA","TC","TD","TF","TG","TH","TJ","TK","TL","TM","TN","TO","TR","TT","TV","TW","TZ","UA","UG","UM","US","UY","UZ","VA","VC","VE","VG","VN","VU","WF","WS","XK","YE","YT","ZA","ZM","ZW"],"phoneNumberRequired":true,"format":"FULL-ISO3166"},"merchantInfo":{"merchantName":"Carkart","merchantId":"16708973830884969730","merchantOrigin":"digipbestlanet.com"},"allowedPaymentMethods":[{"type":"CARD","parameters":{"allowedCardNetworks":["VISA","MASTERCARD","AMEX","DISCOVER","JCB"],"allowedAuthMethods":["PAN_ONLY","CRYPTOGRAM_3DS"],"billingAddressRequired":true,"billingAddressParameters":{"format":"FULL-ISO3166","phoneNumberRequired":true}},"tokenizationSpecification":{"type":"PAYMENT_GATEWAY","parameters":{"gateway":"shopify","gatewayMerchantId":"69204410420"}}}],"emailRequired":true},"customerAccountEmail":null,"environment":"PRODUCTION","availablePresentmentCurrencies":["USD"],"auth":[{"jwt":"eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiJ9.eyJtZXJjaGFudElkIjoiMTY3MDg5NzM4MzA4ODQ5Njk3MzAiLCJtZXJjaGFudE9yaWdpbiI6ImNhcmthcnQuY29tIiwiaWF0IjoxNzkzMDQ0OTM3fQ.x6DvLvY6AVXEqn0p3WhQ5AtXiRIFH3iK9xV2rllxosAaISEYuDp9r7Llw7n7f-8vZwDEIUTsKaygK7EytbHyHg","expiresAt":1793088137},{"jwt":"eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiJ9.eyJtZXJjaGFudElkIjoiMTY3MDg5NzM4MzA4ODQ5Njk3MzAiLCJtZXJjaGFudE9yaWdpbiI6ImNhcmthcnQuY29tIiwiaWF0IjoxNzkzMDg4MTM3fQ.f6WtHhIdCA1E9wtk_x7l3fRC-7YYTeUzDmhPLTVS01tC4eO9bWsotqx1qARdQYKddKJhSeP29C0tUncwtY9_zw","expiresAt":1793131337}],"cardsinkUrl":"https://checkout.pci.shopifyinc.com/sessions","cardsinkCallerIdentificationJwt":"eyJraWQiOiJ2MSIsInR5cCI6IkpXVCIsImFsZyI6IkhTMjU2In0.eyJjbGllbnRfaWQiOiIxMSIsImNsaWVudF9hY2NvdW50X2lkIjoiNjkyMDQ0MTA0MjAiLCJ1bmlxdWVfaWQiOiIwMU01V1dXNjk3QkFWUE1FUDg5QkcwREVGUSIsImlhdCI6MTc5MzA0NDkzN30.j2L0e-kp9uN1C4dF22GOQMRmJMuFslLcLajYjlbU2Vo"}}]" access-token="20810d98afa2dc52788bfff7f8a52a25" buyer-country="US" buyer-locale="en" buyer-currency="USD" shop-id="69204410420" cart-id="hWNIQbcYP9tQJyTzAG7O7kn3" enabled-flags="["a1d1f9a1","370070f3"]" requires-shipping > <div class="wallet-button-wrapper"> <ul class='wallet-cart-grid wallet-cart-grid--skeleton' role="list" data-shopify-buttoncontainer="true"> <li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li><li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li><li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li><li data-testid='grid-cell' class='wallet-cart-button-container'><div class='wallet-cart-button wallet-cart-button__skeleton' role='button' disabled aria-hidden='true'> </div></li> </ul> </div> </shopify-accelerated-checkout-cart> </div>
