Have Questions?
Professional-grade parts used trackside.
Expert help during business hours.
Encrypted checkout & trusted payments.
Orders ship quickly from regional warehouses.
Description:
The ACDelco GM Original Equipment 41-950 Double Platinum Spark Plug is engineered and tested to meet the strict standards required by General Motors. Designed with a copper core center electrode and double platinum pads on both the center and ground electrodes, this spark plug provides reliable ignition performance and long service life.
A fine-wire center electrode design helps improve spark efficiency while maintaining consistent voltage demands and reducing wear on ignition system components. A one-piece, fired-in suppressor seal blends multiple glass types to create a gas-tight seal that helps regulate spark plug energy, reduce radio frequency and engine interference, and protect against compression pressures.
As a GM Original Equipment component, the 41-950 spark plug represents the same parts installed during vehicle production or validated by General Motors for GM vehicles. Designed for OE fit, form, and function, it supports consistent combustion and efficient engine operation.
Features:
GM Original Equipment spark plug engineered to GM standards
Double platinum pads on center and ground electrodes for long service life
Fine-wire center electrode improves spark efficiency
Copper core center electrode promotes cooler operating temperatures
Fired-in suppressor seal helps reduce radio frequency and engine interference
Designed to regulate spark energy and reduce ignition system wear
Conical seat design for secure installation and proper sealing
Product Specifications:
Part number: 41-950
Product line: ACDelco GM Original Equipment
Center electrode core material: Copper
Center electrode design: Fine wire
Center electrode tip material: Platinum
Ground electrode core material: Nickel
Ground electrode tip material: Platinum
Ground electrode quantity: 1
Metal type: Double platinum
Thread diameter: 0.551 in (14 mm)
Reach: 0.689 in
Seat type: Tapered (conical)
Hex size: 16 mm
Resistor type: Yes
Approximate resistor value: 3–10 kΩ
Pre-gap size: 0.053 in
Manufacturer heat range: 12
Core nose length: 0.640 in
Insulator height: 2.087 in
Insulator material: Aluminum oxide
Electrical terminal type: Non-removable nut
Washer included: No
Indexed: No
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
