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Bosch
OE Fine Wire PlatinumBosch 6729 Spark Plug
| Brand | Bosch 6729 |
|---|---|
| Center Electrode Core Material | Nickel-Yttrium and Copper |
| Center Electrode Tip Material | Platinum |
| Ground Configuration | Standard |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Tapered |
| Ground Electrode Tip Material | Nickel-Yttrium |
| Hex Size | 20.8 |
| Insulator Material | Ceramic |
| Insulator Type | Projected |
| Manufacturer Heat Range | 8 |
| Outdoor Power Equipment Application | No |
| Package Contents | Spark Plug |
| Pre-Gap Size | 1.3 |
| Product Length | 3.259843 in |
| Product Width | 0.937008 in |
| Reach | 19 |
| Resistance | 6000 |
| Resistor | Yes |
| Seat Type | Flat |
| Short Style | No |
| Spark Plug Type | 4-Cycle |
| Thread Diameter | 14 |
| Product line | OE Fine Wire Platinum |
| Fits | Chrysler, Dodge, Plymouth, and Eagle · 95 vehicles |
OE Fine Wire Platinum. Meets or exceeds OE specs for platinum spark plugs.
Fine wire design. Improves ignitability and fuel efficiency.
Platinum firing pin. Tapered ground electrode for an economical upgrade.
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Bosch OE Fine Wire Platinum Spark Plug 6729
Bosch 6729 is an OE Fine Wire Platinum spark plug built for direct-replacement ignition service in select Chrysler, Dodge, and Plymouth applications. It uses a platinum center electrode, tapered ground electrode, and preset gap to support consistent ignitability and efficient combustion.
Key Features
- Fine wire platinum firing pin on the center electrode for reliable spark delivery
- Tapered ground electrode design for OE-style ignition performance
- Resistor plug with 6000 resistance for modern secondary ignition systems
- Projected ceramic insulator design
- Flat seat, 14 mm thread diameter, 19 mm reach, and 20.8 mm hex size
- Preset 1.3 gap; do not gap during installation
- Engineered to meet or exceed original equipment specifications for platinum spark plugs
Product Details
The Bosch OE Fine Wire Platinum line focuses on OE replacement spark plugs that match factory-style ignition requirements while using platinum construction for improved ignitability and fuel efficiency. Part number 6729 combines a platinum center electrode with nickel-yttrium ground electrode materials and a nickel-yttrium/copper core to support stable spark performance under everyday driving conditions. This Bosch 6729 spark plug is a practical choice for drivers servicing older Chrysler, Dodge, and Plymouth engines that call for a preset platinum plug.
Compatible With select 1990-2000 Chrysler Town & Country, Chrysler Concorde, Chrysler Dynasty, Chrysler Imperial, Chrysler Intrepid, Chrysler New Yorker, Dodge Caravan, Dodge Grand Caravan, Plymouth Grand Voyager, and Plymouth Voyager applications. Fits 2000 Chrysler Grand Voyager, 2000 Chrysler Voyager, 2000 Dodge Caravan, 2000 Dodge Grand Caravan, 2000 Plymouth Grand Voyager, and 2000 Plymouth Voyager, N/A. This part cross-references common OE-style platinum spark plug applications for the same vehicle coverage.
Common Issues This Plug Can Address
- Hard starting caused by worn or inconsistent spark plugs
- Rough idle from degraded ignition performance
- Misfire concerns related to aged secondary ignition components
- Reduced fuel economy from inefficient combustion
- Loss of throttle response from weak spark delivery
Installation Notes
- Do not gap this plug; the gap is preset from the factory.
- Verify the engine calls for a flat-seat, 14 mm, 19 mm reach spark plug before installation.
- Use the vehicle service specification for torque and replacement interval.
- Inspect ignition wires, coils, and boots during spark plug service to avoid repeat misfire concerns.
Quality Assurance
Bosch designs the OE Fine Wire Platinum line to meet or exceed original equipment specifications for platinum spark plugs, giving you an OE-style replacement built around factory fit and ignition requirements.
This part fits 95 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Drive Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2000 | Chrysler | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Chrysler | Town & Country | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Chrysler | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Dodge | Grand Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 2000 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Chrysler | Town & Country | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Dodge | Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Dodge | Grand Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Plymouth | Grand Voyager | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1999 | Plymouth | Voyager | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Chrysler | Town & Country | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Dodge | Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Dodge | Grand Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1998 | Plymouth | Voyager | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1997 | Chrysler | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1997 | Chrysler | Town & Country | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Dodge | Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Dodge | Grand Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Dodge | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1997 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Plymouth | Grand Voyager | AWD | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1997 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1997 | Plymouth | Voyager | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1996 | Chrysler | Concorde | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1996 | Chrysler | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1996 | Chrysler | Town & Country | FWD | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1996 | Chrysler | Town & Country | FWD | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1996 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1996 | Dodge | Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1996 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1996 | Dodge | Grand Caravan | — | 3.8L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1996 | Dodge | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1996 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1996 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode and Ground Electrode Material is Platinum; OE Fine Wire Platinum |
| 1995 | Chrysler | Concorde | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1995 | Chrysler | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1995 | Chrysler | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1995 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1995 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1995 | Dodge | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1995 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1995 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1994 | Chrysler | Concorde | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1994 | Chrysler | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1994 | Chrysler | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1994 | Dodge | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Chrysler | Concorde | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Chrysler | Dynasty | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1993 | Chrysler | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Chrysler | New Yorker | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Dodge | Intrepid | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1993 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1992 | Chrysler | Dynasty | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1992 | Chrysler | New Yorker | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1992 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1992 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1992 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1992 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1992 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1991 | Chrysler | Dynasty | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1991 | Chrysler | Imperial | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1991 | Chrysler | New Yorker | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1991 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1991 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1991 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1991 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1991 | Plymouth | Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1990 | Chrysler | Dynasty | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; OE Fine Wire Platinum |
| 1990 | Chrysler | Imperial | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1990 | Chrysler | New Yorker | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1990 | Chrysler | Town & Country | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1990 | Dodge | Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1990 | Dodge | Grand Caravan | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
| 1990 | Plymouth | Grand Voyager | — | 3.3L | V6 | N/A | Do Not Gap, Gap is Preset; Original Center Electrode Material is Copper/Nickel; OE Fine Wire Platinum |
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