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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Wednesday, Nov 25
Recently Viewed
At a glance
- Condition
- New
- Core Material
- Platinum
- Thread Size
- M14x1.25
- Vehicle Service Type
- Car, Truck
- Automotive Fit Type
- Vehicle Specific Fit
- In the box
- 4503
Features 4
- 8 pack DENSO Platinum TT 4503 Spark Plug
- Genuine DENSO Parts
- Includes original packaging and hardware
- Direct replacement auto parts
Specs 17
| Brand | Denso |
|---|---|
| Core Material | Platinum |
| Thread Size | M14x1.25 |
| Top Material Type | Platinum |
| Vehicle Service Type | Car, Truck |
| Brand Name | Denso |
| Manufacturer Part Number | 4503 |
| Number of Items | 1 |
| Item Highlight | Replaces 5962H8 5962J106 286 9195166 AGSP32C AGSP32F AJ84575 C2A1 1A068. |
| UPC | 042511045033 |
| Unit Count | 1 Count |
| OEM Equivalent Part Number | 003 159 68 03, 101 905 611 A, 101 905 631 A, 101 905 631 G, 18814-11051, 22401 AA65A, 5-86205-237-0, 8-92063-303-0, 90919-01169, 90919-01196, 90919-01197, 90919-C1002, 98079-551-7S |
| Manufacturer | Denso |
| Model Number | 4503 |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Compatible with Vehicle Type | Car, Truck |
| Automotive Fit Type | Vehicle Specific Fit |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Nov 25
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Most bang for your buck!
I can't comment on gas mileage nor longevity as I only just installed my first set two days ago. I changed out the old champions that had been in service way too long. The vehicle ran great before and after the change to these Denso plugs. This is my first set of Denso's, and I don't drive Toyotas. I'm certainly looking forward to a boost in mileage. The package arrived early, and they were pre-gapped to .039". Perfect fit and high quality appearance. UPDATE: After the first tankful, my gas mileage increased about 2% with these new Denso plugs.
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Reviewed in the United States on February 4, 2023 by Nancy Hamilton
Denso Platinum TT Spark Plugs Stock 4503 Platinum Core
The package was delivered by USPS and left near the front door. Package is not handed directly to a resident, the timing of the delivery is good and on Time. Installed the DENSO PLATINUM TT SPARK PLUGS and the Vehicle now runs a lot more smooth. Frankly, there are NO DEFECTS with the QUALITY-TIMING To the CARs ECM. Product is deliver undamaged and in good quality and will purchase again in the future. THANK YOU,
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Reviewed in the United States on June 25, 2023 by Gabriel
Don't worry, they did the trick!
I replaced the spark plugs and fuel injectors in the 2005 Mustang 4.6L V8 after we got a tank ful of bad fuel and despite all other work we could get it to run right. Replacing the plugs in a Ford 4.6 is not a trivial matter, but these turned out to perform well. No more yellow CEL and it starts and runs smooth.
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Reviewed in the United States on June 18, 2026 by Chris Brosh
Cheaper and better than auto part store.
These went into my 2001 Dodge Ram 1500. They are working just fine. No issues as of yet. A lot cheaper and better quality than what I saw in the auto part stores. If you don't mind waiting for them to be delivered.
Reviewed in the United States on December 29, 2023 by william
Buenísima
Excelente 👌
Reviewed in the United States on June 21, 2025 by No estoy contenta con el protector del carro , según era para un toyota yarys y es demasiado pequeño creo que queda perfecto en un mini Cooper 😬😬😬
sounds great
it is not 2025 and I bought them in 2020 We have a 4.7 dodge 318 jeep// I put these in the 318 and 4 yrs later I take them out and to check them. reset the gap ..bought new cap and rotor and bam it runs sweet. I just NGK in the 4.7 and they burned out but the Denso held up.
Reviewed in the United States on May 15, 2025 by happy customer..
So smooth
Recently changed the spark plugs to my 2001 Lexus gs300, and it feels like I’m driving a newer car, shifts smoothly, drives noticeably better. Great purchase. 8 spark plugs for that price is incredible.
Reviewed in the United States on February 19, 2024 by S
Works as described
Works good
Reviewed in the United States on May 30, 2025 by Bob