No hassle
returns
Live in-stock
inventory
Save over
60% retail
You have no items in your shopping cart.
07/20/2029 2:25 PM
Summer Sale Price $17.86
In Stock (1,250)
Usually delivered within 2 days
Usually delivered within 2 days
Free Shipping
Part number: 4458
Product Details
Bosch 4458 HGR8DQP Platinum +4 Spark Plug, Pack of 1
Products specifications
Electrode Core Material Copper
Electrode Tip Material Platinum
Ground Strap Quantity Four
Manufacturer Heat Range 8
Quantity Sold individually.
Resistor Yes
Shorty Spark Plug No
Spark Plug Reach 0.708 in.
Spark Plug Seat Style Tapered
Spark Plug Thread Size 14mm
Wrench Diameter 5/8 in.

Bosch Platinum+4 spark plug has unique revolutionary firing technology combining the advantages of surface air gap technology, nickel-yttrium four ground electrodes and a heat-fused center electrode with pure platinum providing optimum engine performance, smoother acceleration and top fuel efficiency.

  • Never requires gapping, the electrode gap is factory-set and never requires adjustment
  • Electrode gap is factory set to provide ease of installation - never requires adjustment
  • Four yttrium-enhanced ground electrodes provide optimum access to the air/fuel mixture for the most efficient combustion, plus the yttrium alloy ground electrodes reduce gap wear and oxidation for extended performance life
  • Revolutionary surface air gap firing technology featuring four yttrium-enhanced ground electrodes delivers the longest, most powerful spark for ultimate engine performance
Reviews
Add your review
L
Very easy with amazon link. Love it!
M
Placed order on Sunday and received shipment on Thursday.  Haven't installed items yet but boxes are in good shape.  I'm  satisfied with the transaction.
S
A+++
B
My first experience with Autoplicity has been great. One of the best prices I found for the item. Too, the company is not secretative about itself such as another parts discounter.

Autoplicity is now "bookmarked" for future purchases!
Show All Reviews
Fitment
Buick Commercial Chassis
1996 Buick Commercial Chassis ALL
1995 Buick Commercial Chassis ALL
1994 Buick Commercial Chassis ALL
Buick Lucerne
2009 Buick Lucerne ALL
2008 Buick Lucerne ALL / CXS
2007 Buick Lucerne ALL / CXL / CXS
2006 Buick Lucerne ALL / CXL / CXS
Buick Roadmaster
1996 Buick Roadmaster ALL / Base / Collector's Edition / Estate Wagon / Estate Wagon Collector's Edition / Limited / Limited Collector's Edition
1995 Buick Roadmaster ALL / Base / Estate Wagon / Limited
1994 Buick Roadmaster ALL / Base / Estate Wagon / Limited
Cadillac Commercial Chassis
1996 Cadillac Commercial Chassis ALL
1995 Cadillac Commercial Chassis ALL
1994 Cadillac Commercial Chassis ALL
Cadillac CTS
2007 Cadillac CTS ALL / V
2006 Cadillac CTS ALL / V
2005 Cadillac CTS ALL / V
2004 Cadillac CTS ALL / V
Cadillac DeVille
2005 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
2004 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
2003 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
2002 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
2001 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
2000 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
1999 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
1998 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
1997 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
1996 Cadillac DeVille ALL / Base / Concours / d'Elegance / DHS / DTS
1995 Cadillac DeVille ALL / Base / Concours
1994 Cadillac DeVille ALL / Base / Concours
Cadillac DTS
2009 Cadillac DTS ALL / Base / L / Platinum
2008 Cadillac DTS ALL / Base / L / Platinum
2007 Cadillac DTS ALL / Base / L / Platinum
2006 Cadillac DTS ALL / Base / L / Platinum
Show All Vehicle Fitments
Return Policy
Returns are easy at THMotorsports
Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy