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ACDelco 213-325 - Ignition Knock (Detonation) Sensor (Right)
Product Overview
The ACDelco 213-325 Ignition Knock (Detonation) Sensor is an essential component designed to monitor your engine for pinging or spark knock. This high-quality sensor sends vital signals to the engine control module (ECM) to adjust timing, helping prevent potential engine damage caused by pre-ignition. Manufactured to meet or exceed original equipment specifications, the ACDelco 213-325 ensures reliable fitment and durability for a range of GM vehicles. Trust in the quality of ACDelco, a brand synonymous with excellence in automotive parts. Choose ACDelco 213-325 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This ACDelco 213-325 is equivalent to or replaces the following part numbers: 213325.
Vehicle Compatibility
- Buick (1983-1984) Riviera 4.1 V6
- Buick (1983-1987) Regal 3.8 V6
- Buick (1983-1987) Riviera 3.8 V6
- Buick (1984-1988) LeSabre 3.8 V6
- Buick (1985-1987) Electra 3.8 V6
- Buick (1985-1988) Century 3.8 V6
- Chevrolet (1983-1986) C10 5.0 V8
- Chevrolet (1983-1992) Camaro 5.0 V8
- GMC (1983-1999) C1500 5.0 V8
- Oldsmobile (1983-1984) Cutlass Calais 3.8 V6
This also fits other applications. Please use the vehicle selector tool to verify fitment.
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Frequently Asked Questions
Can a bad sensor cause the vehicle to run hot?
Yes, with a faulty ACDelco 213-325 sensor, there is a chance that higher emissions are being produced from the engine because the engine is running hot.
Can engine knock damage an engine?
Yes, engine knock can be caused by pre-ignition or detonation. If left uncorrected, it can cause possible damage to the motor.
What should I do if my 'Check Engine' light illuminates?
Have your vehicle serviced immediately if the 'Check Engine' light comes on, as this could indicate issues related to the ACDelco 213-325 or other components.
What are common DTCs related to ignition knock sensors?
Common DTCs that may relate to ignition knock sensors include P0330, P0331, and P0332, which indicate issues with the knock sensor circuit.
Order ACDelco 213-325 today for a factory-correct replacement that restores safety and performance.
- BrandACDelco
- PositionRight
- ManufacturerACDelco
- MPN213-325
- FeaturesConnector Gender : Female
Connector Quantity : 1
Connector Shape : Round
FAQ - Answer 1 : Yes. With a faulty sensor, there is a chance that higher emissions are being produced from the engine because the engine is running hot.
FAQ - Answer 2 : Yes. Knock is caused by pre-ignition or detonation. If left uncorrected, it can cause possible damage to the motor.
FAQ - Question 1 : Can a bad sensor cause the vehicle to run hot?
FAQ - Question 2 : Can engine knock damage an engine?
Features & Benefits - Bullet 1 : Sends signals to the engine control module (ECM) to adjust timing
Features & Benefits - Bullet 2 : Helps prevent damage to the engine caused by pre-ignition
Features & Benefits - Bullet 3 : GM-recommended replacement part for your GM vehicle's original factory component
Features & Benefits - Bullet 4 : Offering the quality, reliability, and durability of GM OE
Features & Benefits - Bullet 5 : Manufactured to GM OE specification for fit, form, and function
Good Maintenance Practices - Section 1 - Bullet 1 : Use approved octane fuel for your vehicle.
Good Maintenance Practices - Section 1 - Bullet 2 : Have vehicle serviced if 'Check Engine' light illuminates.
Height (in) : 1.6
Length : 2.6
Length : 53.59
Meets or Exceeds Original Equipment Manufacture Specifications : Yes
Mounting Hardware Included : No
Product Description : ACDelco GM Original Equipment Ignition Knock (Detonation) Sensors monitor the engine for pinging or spark knock, and are GM-recommended replacements for your vehicle's original components. These sensors create a voltage signal based on the vibrations caused by erratic air/fuel mixture combustion; the engine control module uses these signals to adjust the ignition timing and air/fuel mixture. These original equipment ignition knock sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. ⚠ <bold>WARNING:</bold> Cancer and Reproductive Harm - <Underline>https://www.P65Warnings.ca.gov</Underline>
Programming Required : No
Terminal Quantity : 1
Terminal Type : Blade Pin
Threaded End Diameter : 0.25
Threaded End Diameter : 6.35
Weight (lb) : 0.2
Width (in) : 2
Wire Harness Included : No - Cross Reference Numbers213325
- Part TypeIgnition Knock (Detonation) Sensor
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1991 | Chevrolet | Caprice | Base (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1991 | Chevrolet | Caprice | Classic (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1991 | Chevrolet | Caprice | Classic LTZ (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1991 | Chevrolet | Lumina APV | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1991 | Chevrolet | Lumina APV | CL (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1991 | Buick | Roadmaster | Estate Wagon (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1991 | Buick | Commercial Chassis | Base (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1991 | Pontiac | Trans Sport | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1991 | Oldsmobile | Silhouette | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1991 | Oldsmobile | Custom Cruiser | Base (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1992 | Chevrolet | Caprice | Base (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1992 | Chevrolet | Caprice | Classic (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1992 | Chevrolet | Caprice | Classic LTZ (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1992 | Chevrolet | Lumina APV | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1992 | Chevrolet | Lumina APV | CL (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1992 | Pontiac | Trans Sport | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1992 | Oldsmobile | Silhouette | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1992 | Oldsmobile | Custom Cruiser | Base (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1993 | Chevrolet | Caprice | Classic (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1993 | Chevrolet | Caprice | Classic LS (5.0 V8 GAS) | Engine: L03, VIN: E |
| 1993 | Chevrolet | Lumina APV | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1993 | Chevrolet | Lumina APV | LS (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1993 | Pontiac | Grand Am | GT (2.3 L4 GAS) | VIN: 3, VIN: A, VIN: D |
| 1993 | Pontiac | Grand Am | SE (2.3 L4 GAS) | VIN: 3, VIN: A, VIN: D |
| 1993 | Pontiac | Trans Sport | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1993 | Oldsmobile | Silhouette | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1993 | Oldsmobile | Achieva | S (2.3 L4 GAS) | VIN: 3, VIN: A, VIN: D |
| 1993 | Oldsmobile | Achieva | SCX (2.3 L4 GAS) | VIN: 3, VIN: A, VIN: D |
| 1993 | Oldsmobile | Achieva | SL (2.3 L4 GAS) | VIN: 3, VIN: A, VIN: D |
| 1996 | Chevrolet | Caprice | Classic (5.7 V8 GAS) | VIN: P |
| 1996 | Chevrolet | Caprice | Classic (4.3 V8 GAS) | VIN: W |
| 1996 | Chevrolet | Camaro | Z28 (5.7 V8 GAS) | VIN: P |
| 1996 | Chevrolet | Impala | SS (5.7 V8 GAS) | VIN: P |
| 1996 | Chevrolet | Express 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1996 | Chevrolet | Express 2500 | LS (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1996 | Buick | Roadmaster | Collector's Edition (5.7 V8 GAS) | VIN: P |
| 1996 | Buick | Roadmaster | Estate Wagon Collector's Edition (5.7 V8 GAS) | VIN: P |
| 1996 | Buick | Roadmaster | Limited Collector's Edition (5.7 V8 GAS) | VIN: P |
| 1996 | Buick | Commercial Chassis | Base (5.7 V8 GAS) | VIN: P |
| 1996 | Pontiac | Firebird | Formula (5.7 V8 GAS) | VIN: P |
| 1996 | Pontiac | Firebird | Trans Am (5.7 V8 GAS) | VIN: P |
| 1996 | Cadillac | Fleetwood | Base (5.7 V8 GAS) | VIN: P |
| 1996 | Cadillac | Fleetwood | Brougham (5.7 V8 GAS) | VIN: P |
| 1996 | Cadillac | Commercial Chassis | Base (5.7 V8 GAS) | VIN: P |
| 1996 | Cadillac | Commercial Chassis | Brougham (5.7 V8 GAS) | VIN: P |
| 1997 | Chevrolet | Express 1500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | Chevrolet | Express 1500 | LS (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | Chevrolet | Express 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | Chevrolet | Express 2500 | LS (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | Chevrolet | Camaro | Z28 (5.7 V8 GAS) | VIN: P |
| 1997 | GMC | Savana 1500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | GMC | Savana 1500 | SLE (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | GMC | Savana 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | GMC | Savana 2500 | SLE (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1997 | Pontiac | Firebird | Formula (5.7 V8 GAS) | VIN: P |
| 1997 | Pontiac | Firebird | Trans Am (5.7 V8 GAS) | VIN: P |
| 1995 | Pontiac | Grand Am | GT (2.3 L4 GAS) | VIN: D |
| 1995 | Pontiac | Grand Am | SE (2.3 L4 GAS) | VIN: D |
| 1995 | Pontiac | Trans Sport | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1995 | Chevrolet | Lumina APV | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1995 | Chevrolet | Lumina APV | LS (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1994 | Pontiac | Grand Am | GT (2.3 L4 GAS) | VIN: 3, VIN: D, VIN: A |
| 1994 | Pontiac | Grand Am | SE (2.3 L4 GAS) | VIN: 3, VIN: D, VIN: A |
| 1994 | Pontiac | Trans Sport | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1994 | Chevrolet | Lumina APV | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1994 | Chevrolet | Lumina APV | LS (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1994 | Oldsmobile | Silhouette | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1994 | Oldsmobile | Achieva | S (2.3 L4 GAS) | VIN: D, VIN: 3, VIN: A |
| 1994 | Oldsmobile | Achieva | SC (2.3 L4 GAS) | VIN: D, VIN: 3, VIN: A |
| 1994 | Oldsmobile | Achieva | SL (2.3 L4 GAS) | VIN: D, VIN: 3, VIN: A |
| 1990 | Chevrolet | Lumina APV | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1990 | Chevrolet | Lumina APV | CL (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1990 | Chevrolet | Caprice | Base (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: CODE DR-562 |
| 1990 | Chevrolet | Caprice | Classic (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: CODE DR-562 |
| 1990 | Chevrolet | Caprice | Classic Brougham (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: CODE DR-562 |
| 1990 | Chevrolet | Caprice | Classic LS Brougham (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: CODE DR-562 |
| 1990 | Chevrolet | Camaro | Iroc-Z (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: BUTTON TYPE)(1/4-18 NPTF THD |
| 1990 | Chevrolet | Camaro | RS (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: BUTTON TYPE)(1/4-18 NPTF THD |
| 1990 | Pontiac | Trans Sport | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1990 | Pontiac | Firebird | Base (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: BUTTON TYPE)(1/4-18 NPTF THD |
| 1990 | Pontiac | Firebird | Formula (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: BUTTON TYPE)(1/4-18 NPTF THD |
| 1990 | Pontiac | Firebird | Trans Am (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: BUTTON TYPE)(1/4-18 NPTF THD |
| 1990 | Pontiac | Firebird | Trans Am GTA (5.0 V8 GAS) | Engine: L03, VIN: E, Notes: BUTTON TYPE)(1/4-18 NPTF THD |
| 1990 | Oldsmobile | Silhouette | Base (3.1 V6 GAS) | Engine: LG6, VIN: D, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1989 | Chevrolet | S10 Blazer | Base (2.8 V6 GAS) | VIN: R, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1989 | Chevrolet | S10 Blazer | High Country (2.8 V6 GAS) | VIN: R, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1989 | Chevrolet | S10 Blazer | Sport (2.8 V6 GAS) | VIN: R, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1989 | GMC | S15 Jimmy | Base (2.8 V6 GAS) | VIN: R, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1989 | GMC | S15 Jimmy | Gypsy (2.8 V6 GAS) | VIN: R, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1989 | GMC | S15 Jimmy | Sierra Classic (2.8 V6 GAS) | VIN: R, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 1989 | GMC | S15 Jimmy | Timberline (2.8 V6 GAS) | VIN: R, Notes: 1 BUTTON TERM)(1/4-18 THD |
| 2000 | Chevrolet | Express 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2000 | Chevrolet | Express 2500 | LS (5.0 V8 GAS) | Engine: L30, VIN: M, Transmission Type: Transmission, Speed: 4, Transmission Control: Automatic, Transmission Code: 4L60-E |
| 2001 | Chevrolet | Express 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 2001 | Chevrolet | Express 2500 | LS (5.0 V8 GAS) | Engine: L30, VIN: M |
| 2002 | Chevrolet | Express 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 2002 | Chevrolet | Express 2500 | LS (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1998 | Chevrolet | Express 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1998 | Chevrolet | Express 2500 | LS (5.0 V8 GAS) | Engine: L30, VIN: M |
| 1999 | Chevrolet | Express 2500 | Base (5.0 V8 GAS) | Engine: L30, VIN: M |
Warranty Overview
At Newparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, use our Return Portal or contact support.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For full details, please see our complete Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.







