Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

Bosch Double Iridium Spark Plugs 9657 Plug, Iridium, Tapered Seat, 14mm Thread, 17.5mm Reach, Resistor, Each

SKU: BOS9657

Spark Plugs

Bosch Double Iridium Spark Plugs 9657 Plug, Iridium, Tapered Seat, 14mm Thread, 17.5mm Reach, Resistor, Each

SKU: BOS9657

Spark Plugs
A$31.39
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Bosch Double Iridium spark plugs unlock the performance in your engine. They're engineered to deliver both high performance and long life, representing the best of OE spark plug technology. The ultra-fine wire design and laser-welded, tapered ground electrode deliver optimum performance, while the iridium center electrode and ground electrode help it to go the distance.

Bosch Double Iridium spark plug features:

* OE replacement—meets or exceeds manufacturer design requirements for modern gasoline engines, providing OE fit, form, and function
* OE-matched spark position for compatibility with new Gasoline Direct Injection (GDI) technology
* 4 times longer service life compared to standard copper spark plugs
* Nickel plated shell eliminates the need to use anti-seize to prevent corrosion
* Copper-core electrode provides a broader heat range to resist pre-ignition and fouling
* 360 degree continuous laser weld fuses corrosion-resistant precious metal firing pin to base, promoting durability and the longest life
* Tapered ground electrode shape reduces flame shrouding for improved combustion and more power

Part Type

Spark Plugs

Data: v4.2 - Upd: 2026-09-27 14:54:34

Specifications

Product Attributes - Brand
Bosch Automotive
Product Attributes - Manufacturer's Part Number
9657
Product Attributes - Part Type
Spark Plugs
Product Attributes - Product Line
Bosch Double Iridium Spark Plugs
Product Attributes - UPC
028851013789
Product Attributes - Spark Plug Thread Size
14mm
Product Attributes - Spark Plug Reach (in.)
0.689 in.
Product Attributes - Spark Plug Reach (mm)
17.50mm
Product Attributes - Manufacturer Heat Range
8
Product Attributes - Shorty Spark Plug
No
Product Attributes - Resistor
Yes
Product Attributes - Electrode Tip Material
Iridium
Product Attributes - Electrode Core Material
Iridium
Product Attributes - Center Electrode Type
Non-projected
Product Attributes - Spark Plug Seat Style
Tapered
Product Attributes - Wrench Diameter
16mm
Product Attributes - Ground Strap Quantity
One
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Bosch
StreetFX SKU bos9657
SFX Item ID 5169970
Supplier Item Code 5169970
Manufacturer SKU 9657
Manufacturer UPC 28851013789
Alternative References BCH-9657, 14mm, 17.5mm

Compatibility

Application Data
  • UniversalNo
    MakeBUICK
    ModelCENTURY
    SubmodelCUSTOM
    Beginning Year1986
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelCENTURY
    SubmodelESTATE WAGON
    Beginning Year1986
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelCENTURY
    SubmodelLIMITED
    Beginning Year1986
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelCENTURY
    SubmodelT-TYPE
    Beginning Year1986
    Ending Year1986
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelELECTRA
    SubmodelLIMITED
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelELECTRA
    SubmodelPARK AVENUE
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelELECTRA
    SubmodelT-TYPE
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1987
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1986
    Ending Year1986
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelLESABRE
    SubmodelCUSTOM
    Beginning Year1986
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelLESABRE
    SubmodelLIMITED
    Beginning Year1986
    Ending Year1986
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelLESABRE
    SubmodelLIMITED
    Beginning Year1986
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelLESABRE
    SubmodelT-TYPE
    Beginning Year1987
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelRIVIERA
    SubmodelLUXURY
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelRIVIERA
    SubmodelT-TYPE
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.8L/231
  • UniversalNo
    MakeBUICK
    ModelSKYLARK
    SubmodelCUSTOM
    Beginning Year1986
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelSKYLARK
    SubmodelLIMITED
    Beginning Year1986
    Ending Year1988
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelSOMERSET
    SubmodelCUSTOM
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelSOMERSET
    SubmodelLIMITED
    Beginning Year1986
    Ending Year1987
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelSOMERSET REGAL
    SubmodelBASE
    Beginning Year1985
    Ending Year1985
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelSOMERSET REGAL
    SubmodelLIMITED
    Beginning Year1985
    Ending Year1985
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeBUICK
    ModelSOMERSET
    SubmodelT-TYPE
    Beginning Year1986
    Ending Year1986
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size3.0L/181
  • UniversalNo
    MakeCADILLAC
    ModelDEVILLE
    SubmodelBASE
    Beginning Year1982
    Ending Year1982
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size4.1L/252
  • UniversalNo
    MakeCADILLAC
    ModelDEVILLE
    SubmodelBASE
    Beginning Year1982
    Ending Year1983
    Engine TypeV8
    Engine FamilyCADILLAC V8 GAS
    Engine Size4.1L/250
  • UniversalNo
    MakeCADILLAC
    ModelDEVILLE
    SubmodelCABRIOLET
    Beginning Year1982
    Ending Year1982
    Engine TypeV6
    Engine FamilyGM V6 GAS
    Engine Size4.1L/252

Loading compatibility information...

Keep shopping

More from Bosch