Description

Speedometer Recalibrator – Signal Interface – Universal – Each

Why Choose Us?



Frequently Asked Questions​

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors.Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, you’ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, we’ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, we’ll issue a full refund for the product value. Contact us for the return address and further instructions.

About CLASSIC INSTRUMENTS

A winner of multiple industry awards, Classic Instruments produces a wide range of replacement and custom instruments and gauges for a variety of classic and performance applications. Classic Instruments is renowned in the street rod community for their beautiful, hand-crafted work, available in complete packages or as individual gauges, as well as sending units and accessories.

International Shipping

Below are estimated rates and delivery times for popular destinations; full carrier options are available at checkout.

Our dedicated team has years of experience managing international logistics and customs documentation to ensure smooth delivery from our US warehouse to your door. Please review our shipping policy and local import regulations before ordering.

Loading international estimates...

Reviews

There are no reviews yet.

Be the first to review “CLASSIC INSTRUMENTS Speedometer/Tach Calibrator SN74Z”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PROFESSIONAL PRODUCTS SBC Typhoon Manifold – Dual Plane 52043

    SKU: PRP52043
    Product information
    Details...
    Original price was: $246.76.Current price is: $224.33.Add to cart
    Original price was: $246.76.Current price is: $224.33.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PETERSON FLUID SBC .187in End Rail Spac Kit -306193

    SKU: PTR09-1061
    Product information
    • Weight0.115 lbs
    • Dimensions6.5 × 4 × 0.45 in
    • Thickness

      3/16 in

    • Roll Pins Included

      Yes

    • Rail Spacers Included

      Yes

    • Material

      Aluminum

    • Color

      Natural

    Details...
    Original price was: $47.63.Current price is: $43.30.Add to cart
    Original price was: $47.63.Current price is: $43.30.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    NITROUS OXIDE SYSTEMS 2lb. Bottle 10-1/4 4-3/ 14710NOS

    SKU: NOS14710
    Product information
    • Weight3.625 lbs
    • Dimensions12.7 × 5.65 × 5 in
    • Material

      Aluminum

    • Color

      Blue

    • Finish

      Paint

    • Quantity

      Each

    • Variant

      Yes

    Details...
    Original price was: $377.00.Current price is: $341.95.Add to cart
    Original price was: $377.00.Current price is: $341.95.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    RUSSELL #6 120 Deg Endura Hose End 613401

    SKU: RUS613401
    Product information
    • Weight0.105 lbs
    • Dimensions5 × 2.7 × 1.7 in
    • Product Line

      Full Flow

    • Swivel

      Yes

    • Angle

      120 Degree

    • Hose Size

      6 AN

    • Hose Attachment

      Reusable

    Details...
    Original price was: $28.00.Current price is: $24.95.Add to cart
    Original price was: $28.00.Current price is: $24.95.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    STEWART Water Pump SBF Ford Stage 4 46113

    SKU: STE46113
    Product information
    • Weight8.9 lbs
    • Dimensions14.5 × 8.5 × 8.5 in
    • Product Line

      Stage 4

    • Pilot Diameter

      3/4 in

    • Shaft Diameter

      3/4 in

    • Rotation

      Standard

    • Pump Flow

      High Flow

    Details...
    Original price was: $329.48.Current price is: $299.53.Add to cart
    Original price was: $329.48.Current price is: $299.53.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    STEWART Water Pump SBC Short Pro Series STE50005

    SKU: STE50005
    Product information
    • Weight7.78 lbs
    • Dimensions14.75 × 8.8 × 8.5 in
    • Product Line

      Pro Series

    • Pilot Diameter

      3/4 in

    • Shaft Diameter

      3/4 in

    • Rotation

      Standard

    • Pump Flow

      High Flow

    Details...
    Original price was: $487.17.Current price is: $442.88.Add to cart
    Original price was: $487.17.Current price is: $442.88.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HUSKY LINERS X-Act Contour Floor Liners 51411

    SKU: HSK51411
    Product information
    • Weight7.63 lbs
    • Dimensions34 × 24 × 3 in
    • Product Line

      X-ACT Contour

    • Application Specific

      Yes

    • Textured

      Lines

    • Material

      Plastic

    • Color

      Black

    Details...
    Original price was: $99.00.Current price is: $89.99.Add to cart
    Original price was: $99.00.Current price is: $89.99.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    VIBRANT PERFORMANCE 2ft Roll -8 Stainless St eel Braided Flex Hose 11908

    SKU: VIB11908
    Product information
    • Weight0.4 lbs
    • Dimensions11.05 × 10.95 × 1.05 in
    • Material

      Synthetic Rubber

    • Quantity

      Each

    • Variant

      Yes

    • Variant Group

      Hose39

    • Variant Column

      Size,Length

    Details...
    Original price was: $20.39.Current price is: $16.99.Add to cart
    Original price was: $20.39.Current price is: $16.99.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WEATHERTECH 07-14 Silverado Front & Rear Floorliners Black 44066-1-0

    SKU: WEA44066-1-0
    Product information
    • Weight11.8 lbs
    • Dimensions37.5 × 30.1 × 5 in
    • Product Line

      FloorLiner

    • Application Specific

      Yes

    • Second Row Included

      Yes

    • Second Row 1 / 2 Piece

      1 Piece

    • Textured

      Yes

    Details...
    Original price was: $254.00.Current price is: $230.30.Add to cart
    Original price was: $254.00.Current price is: $230.30.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WEATHERTECH Black Rear FloorLiner HP 4416322IM

    SKU: WEA4416322IM
    Product information
    • Weight7.63 lbs
    • Dimensions31 × 26 × 5.5 in
    • Product Line

      FloorLiner HP

    • Application Specific

      Yes

    • Second Row Included

      Yes

    • Second Row 1 / 2 Piece

      1 Piece

    • Textured

      Yes

    Details...
    Original price was: $126.00.Current price is: $113.95.Add to cart
    Original price was: $126.00.Current price is: $113.95.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist

    44