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Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007
Motorad

Motorad 1KS1033 Knock Sensor - Fits GM 8.1L/7.4L Trucks 1998-2007

$81.99 In Stock Sold out
SKU: 1KS1033
Categories:

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  • Description
  • Fitment
  • Warranty and Refund
  • Reviews

Keep your GM truck or van running smoothly with the Motorad 1KS1033 Ignition Knock (Detonation) Sensor. Built with a precision piezoceramic element, this sensor accurately detects a wide range of engine knock frequencies and relays that data to the ECM, helping maintain optimal ignition timing. Manufactured using OEM-grade materials, it's engineered for durability and consistent performance under real-world driving conditions. The 1KS1033 is designed to meet or exceed OEM specifications for fit, form, and function, making it a dependable replacement option for applicable Chevrolet and GMC models from 1998-2007, including Silverado, Sierra, Suburban, Express, Savana and other heavy-duty trucks and vans equipped with 8.1L, 7.4L, or 4.1L engines. Backed by Motorad's Limited Lifetime warranty, this knock sensor offers a straightforward, OEM-focused fitment solution for technicians and DIYers replacing a failed or underperforming sensor.

Features

  • Piezoceramic element detects a wide range of knock frequencies for accurate ECM feedback
  • OEM-grade materials support durability under demanding engine bay conditions
  • Engineered to meet or exceed OEM fit, form and function specifications
  • Screw-on 1/4"-20 coarse thread mount with male blade connector for straightforward installation
  • Limited Lifetime warranty backs your replacement investment

Application Summary

1998-1999 Chevrolet P30 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
1999 Chevrolet P30 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
1999 GMC P3500 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
1999-2000 Chevrolet B7 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
1999-2000 Chevrolet C6500 Kodiak 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
1999-2000 Chevrolet C7500 Kodiak 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
1999-2000 GMC C6500 Topkick 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
1999-2000 GMC C7500 Topkick 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2002 Chevrolet C3500HD 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2002 Chevrolet Express 3500 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2002 GMC C3500HD 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2002 GMC Savana 3500 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2006 Chevrolet Silverado 2500 HD 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2006 Chevrolet Silverado 3500 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2006 Chevrolet Suburban 2500 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2006 GMC Sierra 2500 HD 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2006 GMC Sierra 3500 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2001-2006 GMC Yukon XL 2500 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2002-2006 Chevrolet Avalanche 2500 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2007 Chevrolet Silverado 2500 HD Classic 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2007 Chevrolet Silverado 3500 Classic 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2007 GMC Sierra 2500 HD Classic 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
2007 GMC Sierra 3500 Classic 8.1L -CC 496CID V8 OHV 16 Valve Naturally Aspirated GAS
Part Numbers: 1KS1033

Specifications

  • Brand: Motorad
  • Part Number: 1KS1033
  • Part Type: Ignition Knock (Detonation) Sensor
  • UPC: 055644926360
  • GTIN: 00055644926360
  • Item Dimensions: 2.2500 x 2.2500 x 2.2500 IN
  • Package Dimensions: 2.2500 x 2.2500 x 2.2500 IN
  • Package Weight: 0.2300 PG
  • Package Quantity: 1 EA
  • Terminal Type: Blade
  • Connector Shape: Round
  • Terminal Quantity: 1
  • Terminal Gender: Male
  • Thread Type: Coarse
  • Thread Size: 1/4" - 20
  • Mounting Type: Screw-On

Interchange

  • General Motors: 12591312
  • General Motors: 19236381
  • General Motors: 10456500
  • Motorad: 1KS1033
  • ACDelco: 2134452
  • ACDelco: 2132829
  • ACDelco: 213338
  • BWD: S8630
  • Delphi Engine Management: AS10137
  • Standard Motor Products: KS112
  • KEM: 144429
  • Wells: SU1322
  • Wells: 5S2179
  • Echlin: DKS230
  • Original Engine Management: KS47
  • CARQUEST Sensors By WELLS: 716548
  • CARQUEST Sensors By WELLS: SBC3732
  • Volvo: 38613014
  • Volvo: 3861301
  • HOLSTEIN: 2KNC0197

Warranty

  • Warranty Type: Lifetime
  • Warranty Description: Limited Lifetime

Returns

30-Day Money-Back Guarantee

We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.

To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.

Return Requirements:

  • Items must be securely packed in the original manufacturer's packaging.
  • All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
  • You must obtain and retain the tracking number for your return.

Non-Returnable Items:

  • Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.

We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.

Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.

 


Warranty

Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.

This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.

Exclusions:

The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.

Warranty Claims Process:

  • All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
  • No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
  • The buyer assumes all risk of damage resulting from improper installation.

All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.

 


Shipping

We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).

Shipping to Other Locations:

A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.

Order Processing & Tracking:

  • Orders are shipped Monday through Friday, excluding holidays.
  • Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
  • A tracking number will be emailed within one business day after shipping.

If you do not receive a tracking number, please:

  • Check your spam/junk folder.
  • If it's not there, contact us via phone or eBay message for assistance.

International Orders:

Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.

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