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Denso Standard Spark Plug, Set Of 4

Part #: W9PR-U

$41.10

$16.44

For set of 4

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Product Details

Featured Videos

Video Description:

Having the right spark plugs in forced induction applications is important, and in this video we'll tell you why. Highlights include:

*At 0:20, we explain why the right spark plugs and plug gap make a difference.

*At 0:58, we give our recommendations for choosing the proper spark plug gap for turbo and supercharged applications.

Fits On:

67 Pontiac Executive V8-6.6 , 68-69 Pontiac Catalina V8-6.6 , 68-70 Oldsmobile 442 V8-5.7 , 68 Oldsmobile Cutlass V8-5.7 , ... See more

67 Pontiac Executive V8-6.6 , 68-69 Pontiac Catalina V8-6.6 , 68-70 Oldsmobile 442 V8-5.7 , 68 Oldsmobile Cutlass V8-5.7 , 68 Oldsmobile Delta 88 V8-5.7 , 68 Pontiac Grand Prix V8-6.6 , 68 Pontiac Lemans V8-6.6 , 69-70 Oldsmobile Delta 88 V8-7.5 , 69-70 Oldsmobile Toronado V8-7.5 , 69 Pontiac Firebird V8-6.6 , 70-71 Oldsmobile 98 V8-7.5 , 70-71 Oldsmobile 98 V8-7.5 , 70-71 Oldsmobile Toronado V8-5.7 , 70-71 Pontiac Catalina V8-5.7 , 70-71 Pontiac Firebird V8-5.7 , 70-71 Pontiac Lemans V8-5.7 , 70 Oldsmobile 442 V8-7.5 , 70 Oldsmobile Cutlass V8-7.5 , 70 Pontiac Catalina V8-7.5 , 70 Pontiac Executive V8-5.7 , 70 Pontiac Executive V8-7.5 , 70 Pontiac Grand Prix V8-7.5 , 70 Pontiac GTO V8-5.7 , 70 Pontiac GTO V8-7.5 , 70 Pontiac Lemans V8-7.5 , 70 Pontiac Tempest V8-5.7 , 71 Oldsmobile Cutlass V8-5.7 , 71 Oldsmobile Delta 88 V8-5.7 , 71 Oldsmobile Toronado V8-7.5 , 72-73 Oldsmobile 98 V8-5.7 (H) , 72-73 Oldsmobile Cutlass Supreme V8-5.7 (H), 72-73 Oldsmobile Cutlass Supreme V8-5.7 (H) , 72-73 Oldsmobile Cutlass V8-5.7 (H) , 72-73 Oldsmobile Delta 88 V8-5.7 (H) , 72-73 Oldsmobile Toronado V8-5.7 (H) , 72-74 Oldsmobile Cutlass Supreme V8-7.5 (U) , 72-74 Oldsmobile Cutlass V8-7.5 (U) , 72-74 Oldsmobile Cutlass V8-7.5 (U) , 72-74 Oldsmobile Toronado V8-7.5 (U) , 72-75 Oldsmobile Toronado V8-7.5 (W), 73-76 Oldsmobile 98 V8-7.5 (T) , 73-76 Oldsmobile Custom Cruiser V8-7.5 (T), 73-76 Oldsmobile Delta 88 V8-7.5 (T) , 73 Oldsmobile Omega V8-5.7 (H), 74-75 Oldsmobile Cutlass Supreme V8-5.7 (K) , 74-75 Oldsmobile Cutlass V8-5.7 (K) , 74-75 Oldsmobile Delta 88 V8-5.7 (K) , 74 Oldsmobile 98 V8-7.5 (U) , 74 Oldsmobile Cutlass Supreme V8-5.7 (M) , 74 Oldsmobile Cutlass V8-5.7 (M) , 74 Oldsmobile Delta 88 V8-7.5 (U) , 74 Oldsmobile Omega V8-5.7 (K) , 75-76 Buick Skylark V8-4.3 (F), 75-76 Oldsmobile Cutlass Salon V8-7.5 (T) , 75-76 Oldsmobile Cutlass Supreme V8-7.5 (T) , 75-76 Oldsmobile Cutlass V8-7.5 (T) , 75-77 Oldsmobile Omega V8-4.3 (F) , 75-81 Oldsmobile Cutlass Salon V8-4.3 (F) , 75-81 Oldsmobile Cutlass Supreme V8-4.3 (F) , 75-81 Oldsmobile Cutlass V8-4.3 (F) , 75 Buick Apollo V8-4.3 (F), 75 Oldsmobile Cutlass Salon V8-5.7 (K) , 76-77 Cadillac Seville V8-5.7 (R), 76-77 Oldsmobile Cutlass Salon V8-5.7 (R) , 76-77 Oldsmobile Cutlass Supreme V8-5.7 (R) , 76-77 Oldsmobile Cutlass V8-5.7 (R) , 76-80 Oldsmobile Delta 88 V8-5.7 (R) , 76 Oldsmobile Cutlass Tiara V8-4.3 (F) , 76 Oldsmobile Cutlass Tiara V8-5.7 (R) , 76 Oldsmobile Cutlass Tiara V8-7.5 (T), 76 Oldsmobile Toronado V8-7.5 (S) , 76 Pontiac Grand Lemans V8-4.3 (F) , 76 Pontiac Lemans V8-4.3 (F), 77-78 Buick Lesabre V8-6.6 (K) , 77-78 Buick Riviera V8-6.6 (K), 77-78 Oldsmobile Toronado V8-6.6 (K) , 77-78 Pontiac Grand Safari V8-6.6 (K) , 77-79 Buick Electra V8-6.6 (K), 77-79 Oldsmobile 98 V8-6.6 (K), 77-79 Oldsmobile Custom Cruiser V8-6.6 (K), 77-79 Oldsmobile Delta 88 V8-6.6 (K), 77-79 Pontiac Bonneville V8-6.6 (K), 77-79 Pontiac Catalina V8-6.6 (K), 77-79 Pontiac Firebird V8-6.6 (K) , 77-80 Buick Riviera V8-5.7 (R), 77-80 Buick Riviera V8-5.7 (R) , 77-80 Oldsmobile 98 V8-5.7 (R) , 77-80 Oldsmobile Custom Cruiser V8-5.7 (R) , 77-80 Pontiac Bonneville V8-5.7 (R) , 77-80 Pontiac Catalina V8-5.7 (R) , 77-81 Oldsmobile Delta 88 V8-4.3 (F) , 77 Buick Century V8-5.7 (R) , 77 Buick Century V8-6.6 (K), 77 Buick Lesabre V8-5.7 (R), 77 Buick Regal V8-5.7 (R), 77 Buick Skylark V8-5.7 (R) , 77 Oldsmobile Cutlass Salon V8-6.6 (K) , 77 Oldsmobile Cutlass Supreme V8-6.6 (K) , 77 Oldsmobile Cutlass V8-6.6 (K) , 77 Oldsmobile Omega V8-5.7 (R), 77 Oldsmobile Toronado V8-5.7 (R) , 77 Pontiac Firebird V8-5.7 (R) , 77 Pontiac Grand Lemans V8-5.7 (R) , 77 Pontiac Grand Lemans V8-6.6 (K) , 77 Pontiac Grand Prix V8-5.7 (R) , 77 Pontiac Grand Prix V8-6.6 (K), 77 Pontiac Grand Safari V8-5.7 (R), 77 Pontiac Lemans V8-5.7 (R) , 77 Pontiac Lemans V8-6.6 (K) , 77 Pontiac Phoenix V8-5.7 (L), 78-79 Cadillac Seville V8-5.7 (B) , 78-80 Buick Electra V8-5.7 (R) , 78-81 Oldsmobile Cutlass Calais V8-4.3 (F) , 78 Oldsmobile Cutlass Supreme V8-5.7 (L), 79-80 Buick Lesabre V8-5.7 (R) , 79-80 Oldsmobile Cutlass Calais V8-5.7 (R) , 79-80 Oldsmobile Cutlass Supreme V8-5.7 (R) , 79-80 Oldsmobile Cutlass V8-5.7 (R) , 79 Cadillac Eldorado V8-5.7 (B), 79 Oldsmobile Cutlass Salon V8-5.7 (R) , 79 Pontiac Firebird V8-5.7 (L) , 79 Pontiac Grand Lemans V8-5.7 (L) , 79 Pontiac Lemans V8-5.7 (L), 79 Pontiac Phoenix V8-5.7 (L) , 80-81 Oldsmobile Cutlass Cruiser V8-4.3 (F) , 80-84 Buick Riviera V8-5.0 (Y) , 80-84 Oldsmobile 98 V8-5.0 (Y) , 80-84 Oldsmobile Delta 88 V8-5.0 (Y) , 80-90 Oldsmobile Custom Cruiser V8-5.0 (Y) , 80 Cadillac Eldorado V8-5.7 (8) , 80 Cadillac Seville V8-5.7 (8), 80 Oldsmobile Cutlass Cruiser V8-5.7 (R) , 81-83 Buick Lesabre V8-5.0 (Y) , 81-83 Oldsmobile Cutlass Cruiser V8-5.0 (Y) , 81-83 Oldsmobile Cutlass Cruiser V8-5.0 (Y), 81-84 Buick Electra V8-5.0 (Y) , 81 Pontiac Bonneville V8-5.0 (Y) , 81 Pontiac Catalina V8-5.0 (Y) , 82-84 Oldsmobile Cutlass Calais V8-5.0 (Y) , 82-84 Oldsmobile Cutlass Supreme V8-5.0 (Y) , 82 Oldsmobile Cutlass Calais V8-4.3 (8) , 82 Oldsmobile Cutlass Cruiser V8-4.3 (8) , 82 Oldsmobile Cutlass Supreme V8-4.3 (8) , 82 Oldsmobile Delta 88 V8-4.3 (8) , 84 Buick Lesabre V8-5.0 (Y)

Description:
DENSOs patented U-Groove spark plug enables complete combustion by allowing the spark to fill the gap .created by the U shape. The ball of fire created In the U-Groove develops a larger and hotter flash Front that virtually eliminates excessive fouling and erratic starts caused by poor fuel mixtures.

Patented design
Improved combustion
Improved ignitability

About Denso

Denso is a massive corporation based out of Kariya, Aichi Prefecture, Japan. Denso primarily makes thermal systems, but powertrain control systems and electronics make up a large percentage of Denso's production. Denso's owned by parent company Toyota, and employs tens of thousands of people in the Americas alone.

Denso Aftermarket (www.densoaftermarket.com) carries a huge variety of air condensers, spark plugs, MAF sensors and more for improving the performance of your car. Their products tend to be reliability and efficiency-oriented rather than big power adders. Their attention to quality is peerless, as seen in the fact that they have had zero defects for millions of parts produced. Winners of the Deming Award for quality in 1961, the standard that Denso adheres to exceeds the hopeful expectations of most companies.

Featured Videos

Video Description:

Having the right spark plugs in forced induction applications is important, and in this video we'll tell you why. Highlights include:

*At 0:20, we explain why the right spark plugs and plug gap make a difference.

*At 0:58, we give our recommendations for choosing the proper spark plug gap for turbo and supercharged applications.

FAQs

Q: How do you install spark plugs?
A: Spark plugs are installed by using a spark plug socket. Simply remove the spark plug wires and unbolt the plugs. Replace and gap the new plugs and you should be set.

Q: Do spark plugs come in sets of 4?
A: Spark plugs are sold individually (unless otherwise noted) and should be replaced all at the same time.

Q: What are spark plugs? Why buy spark plugs?
A: Spark plugs create a spark in the combustion chamber of the engine, igniting the fuel and air mixture and getting the engine running. When you're running a higher horsepower motor, spark plugs play a big role. A colder heat range plug (which is what more aftermarket spark plugs are) has less insulation; it cools off faster between firing and the introduction of a fresh charge of the air/fuel mixture. A hot plug can ignite the air/fuel mixture before the plug actually fires. This is called pre-ignition, a form of detonation, and can destroy a motor. When upgrading the power of your vehicle, make sure to look into a colder range spark plug.

If you live in California, please note this item may be subject to a Proposition 65 warning. Click here to learn more.

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