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Bosch4428 Platinum+4 Spark Plug - Direct Fit

Part #: BS4428 | Mfr #: 4428

In Stock
Ships out in 1-2 Business Days
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5 5 out of 5 stars
(2 customer reviews)

$6.48

List Price: $7.65

Save: $1.17

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  • Overview
  • Manufacturer info
  • Related Products
  • Series: Bosch Platinum+4
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Electrode Core Material: Platinum
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Platinum
  • Reach: 19 mm
  • Thread Size: 14 mm
  • Warranty: 12-month or 12,000-mile Bosch limited warranty
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Product reviews

Great plugs by Motorhead5, September 28, 2013

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Great plugs. Grab em and get new wires while you are at it. I noticed a slight increase in gas mileage on my gas hog 01 Ram 5.2L. Engine runs smoother with no missing like it did with old AC Delco gapped plugs.


Bosch Platinum Plus 4 Spark Plugs by Dave, September 17, 2013

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These plugs were 100K replacements and resulted in instant smoothing of idle faster initial start up and overall should result in improved fuel economy. Overall acceleration was also improved.