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Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995
Motorad

Motorad 1KS1025 Ignition Knock Sensor - GM Fitment 1988-1995

$50.99 In Stock Sold out
SKU: 1KS1025
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  • Description
  • Fitment
  • Warranty and Refund
  • Reviews

Keep your engine's ignition timing dialed in with the Motorad 1KS1025 Knock Sensor. Built around a precision piezoceramic element, this sensor is engineered to respond accurately across a wide range of engine knock frequencies, giving your ECM the real-time data it needs to adjust timing and protect against detonation. Manufactured to tight tolerances, it's designed to meet or exceed OEM specifications for reliable, consistent performance. This sensor fits a range of Buick, Cadillac, Chevrolet, GMC, and Oldsmobile vehicles from 1988 through 1995, including models like the Century, Regal, Riviera, Roadmaster, and Fleetwood across a variety of V6 and V8 engine configurations. Backed by Motorad's Limited Lifetime warranty, it's a straightforward, direct-fit replacement for worn or failing knock sensors that can trigger poor performance, reduced fuel economy, or check engine lights. Simple to install and built for dependable long-term service.

Features

  • Piezoceramic element accurately detects knock frequencies so the ECM can correct timing in real time
  • Manufactured to tight tolerances for consistent, repeatable sensor accuracy over time
  • Engineered to meet or exceed OEM specifications for reliable factory-style fitment
  • Confirmed fitment across 150 GM applications spanning 1988-1995 model years
  • Limited Lifetime warranty backing gives buyers long-term ownership confidence

Application Summary

1987 Oldsmobile Calais 2.3L -CC 138CID L4 DOHC 16 Valve Naturally Aspirated GAS
1988, 1990-1995 Oldsmobile 98 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988, 1991 Oldsmobile Cutlass Calais 2.3L -CC 138CID L4 DOHC 16 Valve Naturally Aspirated GAS
1988-1989 Pontiac Safari 5.0L -CC 307CID V8 OHV 16 Valve Naturally Aspirated GAS
1988-1989, 1991 Buick Skylark 2.3L -CC 138CID L4 DOHC 16 Valve Naturally Aspirated GAS
1988-1990 Buick Electra 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988-1990 Cadillac Brougham 5.0L -CC 307CID V8 OHV 16 Valve Naturally Aspirated GAS
1988-1990 Oldsmobile Custom Cruiser 5.0L -CC 307CID V8 OHV 16 Valve Naturally Aspirated GAS
1988-1990, 1992 Pontiac Grand Am 2.3L -CC 138CID L4 DOHC 16 Valve Naturally Aspirated GAS
1988-1991 Buick Reatta 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988-1991 Oldsmobile Delta 88 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988-1992 Oldsmobile Toronado 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988-1993 Buick Riviera 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988-1994 Buick LeSabre 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1988-1995 Pontiac Bonneville 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1989 Oldsmobile Cutlass Ciera 2.8L -CC 173CID V6 OHV 12 Valve Naturally Aspirated GAS
1989, 1991-1993 Buick Skylark 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1989-1990 Buick Skylark 2.5L 2474CC 151CID L4 OHV 8 Valve Naturally Aspirated GAS
1989-1990 Chevrolet Caprice 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1989-1990 Oldsmobile Cutlass Calais 2.5L 2474CC 151CID L4 OHV 8 Valve Naturally Aspirated GAS
1989-1993 Buick Century 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1989-1993 Oldsmobile Cutlass Ciera 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1989-1993 Oldsmobile Cutlass Cruiser 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1990 Oldsmobile Cutlass Supreme 2.3L -CC 140CID L4 DOHC 16 Valve Naturally Aspirated GAS
1990 Pontiac Grand Prix 2.3L -CC 138CID L4 DOHC 16 Valve Naturally Aspirated GAS
1990-1991 Chevrolet Beretta 2.2L -CC 134CID L4 OHV 8 Valve Naturally Aspirated GAS
1990-1991 Oldsmobile Cutlass Supreme 2.3L -CC 138CID L4 DOHC 16 Valve Naturally Aspirated GAS
1990-1992 Buick Century 2.5L 2474CC 151CID L4 OHV 8 Valve Naturally Aspirated GAS
1990-1992 Chevrolet Camaro 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1990-1992 Pontiac Firebird 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
1990-1992 Pontiac Firebird 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1990-1994 Buick Regal 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1991 Oldsmobile Custom Cruiser 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1991 Pontiac Grand Am 2.5L 2474CC 151CID L4 OHV 8 Valve Naturally Aspirated GAS
1991, 1993-1995 Oldsmobile Cutlass Supreme 3.4L -CC 207CID V6 DOHC 24 Valve Naturally Aspirated GAS
1991, 1995 Pontiac Grand Prix 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
1991-1992 Chevrolet Camaro 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
1991-1995 Buick Park Avenue 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1991-1995 Chevrolet Lumina 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
1992 Buick Skylark 2.3L -CC 138CID L4 SOHC 8 Valve Naturally Aspirated GAS
1992 Chevrolet Beretta 2.2L 2190CC 134CID L4 OHV 8 Valve Naturally Aspirated GAS
1992 Oldsmobile Cutlass Supreme 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
1992 Pontiac Grand Am 2.3L -CC 140CID L4 DOHC 16 Valve Naturally Aspirated GAS
1992-1993 Oldsmobile Achieva 2.3L -CC 138CID L4 DOHC 16 Valve Naturally Aspirated GAS
1992-1993 Oldsmobile Achieva 2.3L -CC 140CID L4 DOHC 16 Valve Naturally Aspirated GAS
1992-1993 Oldsmobile Achieva 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1993 Pontiac Grand Am 3.3L -CC 204CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1994 Chevrolet Lumina APV 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1994 Oldsmobile Silhouette 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1994 Pontiac Grand Prix 3.4L -CC 207CID V6 DOHC 24 Valve Naturally Aspirated GAS
1992-1994 Pontiac Trans Sport 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1992-1995 Chevrolet Corvette 5.7L -CC 350CID V8 OHV 16 Valve Naturally Aspirated GAS
1992-1995 Oldsmobile 88 3.8L 3800CC 231CID V6 OHV 12 Valve Naturally Aspirated GAS
1993 Buick Century 2.2L 2190CC 134CID L4 OHV 8 Valve Naturally Aspirated GAS
1993 Chevrolet C1500 7.4L -CC 454CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 Chevrolet C2500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 Chevrolet Camaro 3.4L -CC 207CID V6 OHV 12 Valve Naturally Aspirated GAS
1993-1995 Chevrolet G10 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 Chevrolet G20 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 Chevrolet K1500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 Chevrolet K2500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 GMC C1500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 GMC C2500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 GMC G1500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 GMC G2500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 GMC K1500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 GMC K2500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1993-1995 Pontiac Firebird 3.4L -CC 207CID V6 OHV 12 Valve Naturally Aspirated GAS
1994-1995 Buick Commercial Chassis 5.7L -CC 350CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-1995 Buick Roadmaster 5.7L -CC 350CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-1995 Cadillac Commercial Chassis 5.7L -CC 350CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-1995 Cadillac Fleetwood 5.7L -CC 350CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-1995 Chevrolet C1500 5.0L -CC 305CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-1995 Chevrolet Caprice 4.3L -CC 265CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-1995 Chevrolet Caprice 5.7L -CC 350CID V8 OHV 16 Valve Naturally Aspirated GAS
1994-1995 Chevrolet Impala 5.7L -CC 350CID V8 OHV 16 Valve Naturally Aspirated GAS
1995 Buick Riviera 3.8L 3800CC 231CID V6 OHV 12 Valve Supercharged GAS
1995 Chevrolet Monte Carlo 3.1L -CC 189CID V6 OHV 12 Valve Naturally Aspirated GAS
Part Numbers: 1KS1025

Specifications

  • Brand: Motorad
  • Part Number: 1KS1025
  • Part Type: Ignition Knock (Detonation) Sensor
  • UPC: 055644926285
  • GTIN: 00055644926285
  • 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
  • Threaded End Diameter: 0.25
  • Threaded End Diameter: 6.35

Interchange

  • General Motors: 10456056
  • General Motors: 1103700
  • General Motors: 10456019
  • General Motors: 10456126
  • General Motors: 10456206
  • General Motors: 10456207
  • General Motors: 10456220
  • Motorad: 1KS1025
  • Mercury Marine: 806612T
  • KEM: 144411
  • KEM: 144405
  • NAPA Mileage Plus: DKS206SB
  • Original Engine Management: KS27
  • CARQUEST Sensors By WELLS: 716538
  • CARQUEST Sensors By WELLS: 716520
  • Volvo: 38503579
  • Volvo: 3850357
  • Advan-tech: 3H3
  • Forecast: KS27
  • Airtex Engine Management: 5S2170

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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