How do I find the right spark plug for my vehicle?

Use your vehicle's Year, Make, and Model along with engine size to find the correct plug. Every product listing includes compatibility information. If you're unsure, your vehicle's owner's manual will list the OEM spark plug part number, which you can use to cross-reference our catalog. You can also contact us at Contact Us and we'll help you find the right part.

What's the difference between copper, platinum, and iridium spark plugs?

Copper: Best conductivity, lowest cost, shortest lifespan (~20,000–30,000 miles). Good for older vehicles or high-performance builds with frequent tune-ups. Platinum: Harder electrode, lasts ~60,000 miles. Standard upgrade for most modern vehicles. Iridium: Hardest material, finest electrode tip, best ignitability, longest life (~80,000–100,000+ miles). Best choice for most modern engines.

Can I use aftermarket spark plugs instead of OEM?

Yes — in most cases, quality aftermarket plugs from NGK, Champion, ACDelco, or Autolite perform equal to or better than OEM. These brands supply original equipment to major automakers. Always match the heat range and electrode type recommended for your engine.

How often should I change my spark plugs?

Copper plugs: every 20,000–30,000 miles. Platinum plugs: every 60,000 miles. Iridium plugs: every 80,000–100,000 miles. Check your owner's manual for your vehicle's specific interval. Symptoms of worn plugs include rough idle, misfires, reduced fuel economy, and hard starting.

Do you offer free shipping?

Yes — all orders ship free , with no minimum purchase required. Free shipping applies to every order, every time.

How long does shipping take?

Orders are processed within 1–2 business days. Standard delivery typically takes 3–7 business days after processing. You will receive a tracking number by email once your order ships.

Do you ship internationally?

At this time we ship within the United States only.

What if I received the wrong item or a defective part?

Contact us immediately at Contact Us with your order number and a photo of the item. We will ship a replacement or issue a full refund at no additional cost to you.

What brands do you carry?

We carry the industry's most trusted brands: NGK, Champion, ACDelco, Motorcraft, Autolite, Permatex, Lucas Oil, and ATP . Our catalog includes over 20,000 parts covering spark plugs, iridium plugs, oil filters, air filters, oxygen sensors, automotive chemicals, and more.

Are your parts new or remanufactured?

All parts we sell are new — never remanufactured, rebuilt, or used. Every product ships from the original manufacturer's current production run.

How do I know a part will fit my vehicle before I buy?

Each product listing includes vehicle compatibility details. If you have any doubts, email us at Contact Us before ordering. We'd rather confirm fitment upfront than process a return later.

How do I reach customer support?

Email: Contact Us Phone: 512.850.6844 Address: 121 Spur 191, PO Box #242, Spicewood, TX 78669 We respond to all inquiries within 1 business day.

Home / ACDelco 41-630 Copper Spark Plug - 8 Pack

ACDelco 41-630 Copper Spark Plug - 8 Pack

Name: ACDelco 41-630 Copper Spark Plug - 8 Pack
Brand: TXN Supply Co
SKU: ACD-41-630-8PK-FBM
Price: 35.77 USD
Availability: InStock

$35.77

Free shipping on all orders.

Qty In Stock: 20

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ACDelco 41-630 Copper Spark Plug - 8 Pack

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Product Description

The ACDelco 41-630 Copper Spark Plug delivers reliable ignition with a copper core for excellent conductivity. Designed as an OEM replacement, it ensures consistent starts, smooth performance, and improved fuel efficiency. Its durable design resists fouling, enhances combustion, and extends plug life for optimal engine operation.

Features & Benefits:

🔧 Copper core ensures superior conductivity for reliable spark

🔧 Suppressor seal reduces interference for smooth performance

🔧 Optimized combustion improves fuel economy and power

🔧 Pre-gapped design ensures quick and easy installation

Specifications:

Brand & Part Number: ACDelco 41-630

Material: Copper Core, Nickel Alloy

Thread Size: 14mm

Reach: 0.441 in. (11.2mm)

Gap: Pre-gapped (~0.035 in.)

Keep your engine running smoothly with ACDelco’s spark plug!

🔧 Buy now for fast shipping and 100% satisfaction guaranteed.

Feature Category

Spark Plugs

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Lubricants

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About Us

At TXN Supply, we're driven by a passion for quality and reliability. Whether you're a DIY mechanic, an automotive professional, or just looking for top-notch essentials, we provide premium spark plugs, oil filters, fluids, and more from trusted brands like Champion, NGK, and ACDelco.

Our mission is simple: to deliver high-quality auto parts and everyday must-haves with fast shipping and great prices!

Send Us A Message

Payment

Immediate payment is required for all purchases. We accept major payment methods via eBay Managed Payments, including credit/debit cards, PayPal, Apple Pay, and Google Pay. Orders process immediately after payment. Contact us if you need assistance.

Shipping

We offer fast, reliable shipping within the USA. Orders are processed quickly and shipped via trusted carriers. Tracking information will be provided. Expedited options may be available at an extra cost. Contact us for any shipping inquiries.

Returns

We offer a 30-day return period. Items must be in original condition. Buyer is responsible for return shipping unless the item is defective or incorrect. Refunds are processed once the item is received. Contact us for any return assistance.

Why customers love us?

"Exactly as described, fast shipping, good packing and good communication."

Buyer: 8***S (363)

"Plugs As Described Great Price Good Communication Fast Shipping THANKS!"

Buyer: D***F (493)

"Exactly as described, great price, very fast shipping, excellent seller! Thanks!"

Buyer: R***R (1165)

"A+++ item as described, packaged well and shipped fast"

Buyer: P***R (844)

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All Orders Ship From Texas

Vehicle Compatibility (76 applications)

Part reference: 41-630

Year	Make	Model	Trim / Engine
1982	Buick	Estate Wagon	CUSTOM \| 5.0L
1982	Buick	Lesabre	CUSTOM \| 5.0L
1982	Buick	Regal	REGAL \| 5.0L
1982	Buick	Riviera	CONVERTIBLE COUPE \| 5.0L
1982	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1982	Oldsmobile	Cutlass	BROUGHAM \| 4.3L
1982	Oldsmobile	Cutlass	BROUGHAM \| 5.0L
1982	Oldsmobile	Delta 88	BROUGHAM \| 4.3L
1982	Oldsmobile	Delta 88	BROUGHAM \| 5.0L
1982	Oldsmobile	Toronado	BROUGHAM \| 5.0L
1983	Buick	Estate Wagon	CUSTOM \| 5.0L
1983	Buick	Lesabre	CUSTOM \| 5.0L
1983	Buick	Regal	REGAL \| 5.0L
1983	Buick	Riviera	CONVERTIBLE COUPE \| 5.0L
1983	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1983	Oldsmobile	Cutlass	BROUGHAM \| 4.3L
1983	Oldsmobile	Cutlass	BROUGHAM \| 5.0L
1983	Oldsmobile	Delta 88	BROUGHAM \| 4.3L
1983	Oldsmobile	Delta 88	BROUGHAM \| 5.0L
1983	Oldsmobile	Toronado	BROUGHAM \| 5.0L
1984	Buick	Estate Wagon	CUSTOM \| 5.0L
1984	Buick	Lesabre	CUSTOM \| 5.0L
1984	Buick	Regal	REGAL \| 5.0L
1984	Buick	Riviera	CONVERTIBLE COUPE \| 5.0L
1984	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1984	Oldsmobile	Cutlass	BROUGHAM \| 4.3L
1984	Oldsmobile	Cutlass	BROUGHAM \| 5.0L
1984	Oldsmobile	Delta 88	BROUGHAM \| 4.3L
1984	Oldsmobile	Delta 88	BROUGHAM \| 5.0L
1984	Oldsmobile	Toronado	BROUGHAM \| 5.0L
1985	Buick	Estate Wagon	CUSTOM \| 5.0L
1985	Buick	Lesabre	CUSTOM \| 5.0L
1985	Buick	Regal	REGAL \| 5.0L
1985	Buick	Riviera	CONVERTIBLE COUPE \| 5.0L
1985	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1985	Oldsmobile	Cutlass	BROUGHAM \| 4.3L
1985	Oldsmobile	Cutlass	BROUGHAM \| 5.0L
1985	Oldsmobile	Delta 88	BROUGHAM \| 4.3L
1985	Oldsmobile	Delta 88	BROUGHAM \| 5.0L
1985	Oldsmobile	Toronado	BROUGHAM \| 5.0L
1986	Buick	Estate Wagon	CUSTOM \| 5.0L
1986	Buick	Regal	REGAL \| 5.0L
1986	Cadillac	Fleetwood	BROUGHAM RWD \| 5.0L
1986	Chevrolet	Caprice	BROUGHAM \| 5.0L
1986	Chevrolet	El Camino	EL CAMINO
1986	Chevrolet	Monte Carlo	EL CAMINO
1986	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1986	Oldsmobile	Cutlass	BROUGHAM \| 4.3L
1986	Oldsmobile	Cutlass	BROUGHAM \| 5.0L
1986	Pontiac	Parisienne	BROUGHAM \| 5.0L
1987	Buick	Estate Wagon	CUSTOM \| 5.0L
1987	Buick	Regal	REGAL \| 5.0L
1987	Cadillac	Brougham	BROUGHAM \| 5.0L
1987	Chevrolet	Caprice	BROUGHAM \| 5.0L
1987	Chevrolet	El Camino	EL CAMINO
1987	Chevrolet	Monte Carlo	EL CAMINO
1987	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1987	Oldsmobile	Cutlass	BROUGHAM \| 4.3L
1987	Oldsmobile	Cutlass	BROUGHAM \| 5.0L
1987	Pontiac	Safari	STATION WAGON \| 5.0L
1988	Buick	Estate Wagon	CUSTOM \| 5.0L
1988	Buick	Lesabre	CUSTOM \| 5.0L
1988	Cadillac	Brougham	BROUGHAM \| 5.0L
1988	Chevrolet	Caprice	BROUGHAM \| 5.0L
1988	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1988	Pontiac	Safari	STATION WAGON \| 5.0L
1989	Buick	Estate Wagon	CUSTOM \| 5.0L
1989	Buick	Lesabre	CUSTOM \| 5.0L
1989	Cadillac	Brougham	BROUGHAM \| 5.0L
1989	Chevrolet	Caprice	BROUGHAM \| 5.0L
1989	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L
1989	Pontiac	Safari	STATION WAGON \| 5.0L
1990	Buick	Lesabre	CUSTOM \| 5.0L
1990	Cadillac	Brougham	BROUGHAM \| 5.0L
1990	Chevrolet	Caprice	BROUGHAM \| 5.0L
1990	Oldsmobile	Custom Cruiser	BROUGHAM \| 5.0L

Shipping Info

Free shipping on every US order. In-stock parts typically ship within 1 business day from Texas.

Returns

30-day returns on unused parts in original packaging. Wrong or defective items are replaced or refunded. See the return policy.

How do I confirm this part fits?

Match the brand and part number to your vehicle, or use the Parts Finder on the homepage. Contact us before ordering if you are unsure.

Are these parts new?

Yes. TXN Supply Co sells new parts from trusted OEM-quality brands — not remanufactured cores.

How fast will my order ship?

In-stock orders ship within 1 business day. Delivery time depends on your ZIP; most US addresses arrive in 2–5 business days.

What is your return policy?

Unused items can be returned within 30 days in original packaging. Customer-initiated returns may include a restocking fee and return shipping.

ACDelco 41-630 Copper Spark Plug - 8 Pack

Fast & Secure Shipping

30 Days Moneyback

24/7 Customer Support

100% Satisfaction Guarantee

Features & Benefits:

Specifications:

Feature Category

Spark Plugs

Oil Filters

Lubricants

Accessories

Shop By Brand

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