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- Autolite 3923 Copper Spark Plug
- Gap .043 (in); Auto
- Copper Spark Plug
- Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
- 0.133
- 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Regular
- Core Nose Length:
- 0.399
- 10.13
- Washer Type: Crush
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 5/8
- Reach:
- 0.75
- 19.05
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Manufacturer Heat Range: 10
- Pre-Gap Size:
- 0.044
- 1.12
- Resistance: 4000
- Insulator Height:
- 2.007
- 50.98
-
Features:
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
- Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
-
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
- This item must be purchased in quantities of 4
This Part Fits the Following OEM/Substitute Numbers:
09482-00427, 101 000 033 AA, 101 000 035 HJ, 11109-84Z00, 11109-86Z00, 14 F-7 DU, 14 F-7 DUO, 14 F-7 LDUR4, 14 F-8 DUO, 14 FGH-7 DTURX, 14 FGR-6 DDU, 14 FGR-6 KQU, 14 FR-6 LDU, 14 FR-7 DU, 14 FR-7 DUX, 14 FR-7 KUOX, 14 FR-8 DU, 14 FR-8 DUX...VIEW MORE
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1997 - Lexus LS400 | V | 3969 | 8 Cyl 4.0L | - |
- Autolite APP3923 Double Platinum Spark Plug
- Gap .043 (in)
- Double Platinum Spark Plug
- Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
- 0.133
- 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Performance
- Core Nose Length:
- 0.399
- 10.13
- Washer Type: Crush
- Ground Electrode Tip Material: Platinum
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 5/8
- Reach:
- 0.75
- 19.05
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Standard
- Manufacturer Heat Range: 10
- Pre-Gap Size:
- 0.044
- 1.12
- Resistance: 4000
- Insulator Height:
- 2.007
- 50.98
-
Features:
- Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
- The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
- Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
- The multi-rib insulator prevents flash-over.
- Autolite® Double Platinum spark plugs have a platinum-to-platinum design that decreases gap erosion, reduces misfires, and provides improved durability*, leading to longer service life. It provides superior performance over copper and platinum plugs primarily used in distributorless ignition system (DIS) engines.
-
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
- This item must be purchased in quantities of 4
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1997 - Lexus LS400 | V | 3969 | 8 Cyl 4.0L | - |
- Autolite APP3923 Double Platinum Spark Plug
- OE Style
- Double Platinum Spark Plug
- Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
- 0.133
- 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Performance
- Core Nose Length:
- 0.399
- 10.13
- Washer Type: Crush
- Ground Electrode Tip Material: Platinum
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 5/8
- Reach:
- 0.75
- 19.05
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Standard
- Manufacturer Heat Range: 10
- Pre-Gap Size:
- 0.044
- 1.12
- Resistance: 4000
- Insulator Height:
- 2.007
- 50.98
-
Features:
- Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
- The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
- Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
- The multi-rib insulator prevents flash-over.
- Autolite® Double Platinum spark plugs have a platinum-to-platinum design that decreases gap erosion, reduces misfires, and provides improved durability*, leading to longer service life. It provides superior performance over copper and platinum plugs primarily used in distributorless ignition system (DIS) engines.
-
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
- This item must be purchased in quantities of 4
This Part Fits the Following OEM/Substitute Numbers:
06H 905 601 A, 06H 905 611, 101 000 063 AA, 101 905 610, 101 905 611, 101 905 621, 101 905 621 B, 101 905 621 C, 101 905 631 B, 101 905 631B, 14 F-7 DPURX2, 14 F-7 DPURX2, 14 F-7 HPURX2, 14 FGH-7 DTURXO, 14F-4DPU, 176-5298, 176-5301, 176-5302...VIEW MORE
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1997 - Lexus LS400 | V | 3969 | 8 Cyl 4.0L | - |
- Autolite AP3923 Platinum Spark Plug
- Gap .043 (in)
- Platinum Spark Plug
- Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
- 0.133
- 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Performance
- Core Nose Length:
- 0.399
- 10.13
- Washer Type: Crush
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 5/8
- Reach:
- 0.75
- 19.05
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Standard
- Manufacturer Heat Range: 10
- Pre-Gap Size:
- 0.044
- 1.12
- Resistance: 4000
- Insulator Height:
- 2.007
- 50.98
-
Features:
- Engineered with a platinum firing tip that prevents gap erosion for longer service life.
- Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- The multi-rib insulator prevents flash-over.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
- Autolite® Platinum spark plugs are engineered with a platinum center electrode firing tip that provides improved performance and increased durability, making it a reliable choice for all older engine applications and designs. Its platinum design delivers quicker firing, smoother starts, for better acceleration, and improved fuel efficiency.
-
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
- This item must be purchased in quantities of 4
This Part Fits the Following OEM/Substitute Numbers:
1257, 14 FGH-8 DPURX2, 14 FR-7 KPU, 14F-4DPU, 3007, 344, 3720, 4001, 5, 7002, 8002, 8013, 9195166, AGSP22C, BCP6EVX, BCPR6EVX-11, BKR5EVX-11, BKR6EGP...VIEW MORE
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1997 - Lexus LS400 | V | 3969 | 8 Cyl 4.0L | - |
- Autolite XP3923 Iridium XP Spark Plug
- Gap .043 (in)
- Iridium XP Spark Plug
- Product Attributes:
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
- 0.133
- 3.38
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Performance
- Core Nose Length:
- 0.399
- 10.13
- Washer Type: Crush
- Ground Electrode Tip Material: Platinum
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Indexed: No
- Ground Electrode Tip Design: Taper Cut
- Pre-Gap Size:
- 0.044
- 1.12
- Center Electrode Projection: Mid Projection
- Seat Type: Flat
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 5/8
- Reach:
- 0.75
- 19.05
- Center Electrode Tip Material: Iridium
- Manufacturer Heat Range: 10
- Resistance: 4000
- Insulator Height:
- 2.007
- 50.98
-
Features:
- Engineered with an Iridium-enhanced center electrode and fine-wire design that increases ignitability and provides a more focused ignition for improved engine performance.
- Its proprietary platinum ground electrode provides increased durability* and resistance to wear, extending the life of the plug.
- The tapered ground wire improves engine ignitability.
- Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength while preventing flash-over.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
- Includes a lifetime limited warranty that guarantees optimum performance equal to OE designed plugs.
- Autolite® Iridium XP spark plugs are engineered with an iridium-enhanced fine-wire and a proprietary, platinum ground electrode, to increase durability*, while its tapered ground wire maximizes engine efficiency, delivering improved engine performance, fuel efficiency, acceleration, and ignitability.
-
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
- This item must be purchased in quantities of 4
This Part Fits the Following OEM/Substitute Numbers:
003 159 97 03, 003 159 97 03 26, 004 159 14 03, 03C 905 601, 05159713AB, 06H 905 601 B, 06H 905 604, 06H 905 621, 06H 905 621 A, 09482-00549, 09482-00550, 101 905 611 A, 101 905 626, 101 905 631 F, 101 905 631 G, 101 905 631 H, 101 905 640, 101 905 640 D...VIEW MORE
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1997 - Lexus LS400 | V | 3969 | 8 Cyl 4.0L | - |
- Autolite AI3923 Iridium Ultra Spark Plug
- Gap .043 (in)
- Iridium Ultra Spark Plug
- Product Attributes:
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
- 0.133
- 3.38
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Performance
- Core Nose Length:
- 0.399
- 10.13
- Washer Type: Crush
- Ground Electrode Tip Material: Platinum
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Indexed: No
- Ground Electrode Tip Design: Taper Cut
- Pre-Gap Size:
- 0.044
- 1.12
- Center Electrode Projection: Mid Projection
- Seat Type: Flat
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 5/8
- Reach:
- 0.75
- 19.05
- Center Electrode Tip Material: Iridium
- Manufacturer Heat Range: 10
- Resistance: 4000
- Insulator Height:
- 2.007
- 50.98
-
Features:
- Engineered with an iridium-enhanced laser-welded fine-wire center electrode that provides focused ignition, optimal ignitability, and maximum performance.
- Its proprietary platinum ground electrode provides increased durability and resistance to wear, extending the life of the plug.
- The tapered ground wire enhances ignitability for improved combustion and performance.
- The high alumina ceramic multi-rib insulator insulator provides thermal conductivity and superior insulation for increased strength & prevents flash-over.
- The copper core within the plug provides reliable performance with higher thermal conductivity.
- Autolite® Iridium Ultra® is equipped with a laser welded iridium enhanced fine-wire center electrode that ensures your engine runs at maximum performance; while its double precious metal design provides increased durability, allowing your engine to maintain desired performance levels for longer. Iridium Ultra delivers optimal fuel efficiency, acceleration, and ignitability, making it the best OE replacement plug choice for modern engines.
-
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.
This Part Fits the Following OEM/Substitute Numbers:
003 159 97 03, 004 159 14 03, 06H 905 601 B, 09482-00549, 09482-00550, 101 905 631 G, 12290-RB0-J11, 12571164, 127, 1822A002, 1822A069, 2095, 22401 AA731, 3297, 41-111, 41-122, 55585534, 7421...VIEW MORE
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1997 - Lexus LS400 | V | 3969 | 8 Cyl 4.0L | - |
- Autolite AR3923 Racing Spark Plug
- Gap .043 (in); Auto
- Racing Spark Plug
- Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Insulator Tip Projection:
- 0.133
- 3.38
- Seat Type: Flat
- Washer Included: Yes
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Performance
- Core Nose Length:
- 0.399
- 10.13
- Washer Type: Crush
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 5/8
- Reach:
- 0.75
- 19.05
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Standard
- Manufacturer Heat Range: 10
- Pre-Gap Size:
- 0.044
- 1.12
- Resistance: 4000
- Insulator Height:
- 1.988
- 50.5
-
Features:
- Engineered with a cut-back ground electrode that delivers optimal ignitability of the flame kernel and better heat transfer, leading to quicker starts.
- The yttrium-enhanced alloy enables up to 8% reduction in ground wire temperature for colder heat ranges designed to enable performance modifications and handle intense conditions.
- Designed with an anti-corrosive nickel-plating prevents rusting better than black oxide, allowing the plug to maintain its durability and efficiency.
- Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength while preventing flash-over.
- Autolite® Racing spark plugs are engineered with a cut-back ground electrode, anti-corrosive nickel plating, and large ground electrode that deliver better heat transfer, ensuring maximum engine performance on the track.
-
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
- This item must be purchased in quantities of 4
This Part Fits the Following OEM/Substitute Numbers:
344, 6962, BKR6E, RC10YC4, RC8YC4, RC9YC, RC9YC4, RC9YC5
Additional Fitment Information:
| Vehicle | Block | CC | Engine | CID |
|---|---|---|---|---|
| 1997 - Lexus LS400 | V | 3969 | 8 Cyl 4.0L | - |
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