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Description:
The ACDelco R44LTSM GM Original Equipment Conventional Spark Plug is engineered and validated by General Motors to meet strict OE performance standards. Designed as a direct replacement for factory-installed spark plugs, it delivers dependable ignition performance and efficient engine operation.
Featuring a copper core center electrode, the R44LTSM provides excellent heat transfer to help maintain proper operating temperatures and improve durability. The nickel alloy electrode tip and nickel ground electrode support long service life, while the resistor design helps reduce electrical interference for stable ignition performance.
ACDelco GM Original Equipment spark plugs are the same components installed during vehicle production or validated by GM engineers, ensuring proper fit, function, and reliability for many GM vehicles and compatible applications.
Features:
GM Original Equipment spark plug engineered and validated by General Motors
Copper core center electrode improves heat transfer and durability
Nickel alloy electrode tip for consistent ignition performance
Resistor design helps reduce electrical interference
Designed for reliable ignition and efficient engine operation
OE-style replacement for many GM vehicles
Product Specifications:
Part number: R44LTSM
Product line: ACDelco GM Original Equipment
Center electrode core material: Copper
Center electrode tip material: Nickel alloy
Ground electrode core material: Nickel
Ground electrode quantity: 1
Thread diameter: 14 mm (0.55 in)
Seat type: Tapered
Reach: 0.68 in (17.25 mm)
Hex size: 5/8 in
Resistor type: Yes
Pre-gap size: 0.04 in (1.12 mm)
Manufacturer heat range: 4
Package quantity: 4
Country of origin: China
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).
