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Distributor Cap | Replacement Distributor Caps

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Distributor Cap | Replacement Distributor Caps

Daiichi Distributor Cap Japan Distributor Cap Daiichi Distributor Cap Japan Distributor Cap Distributor Cap
Japan Distributor Cap Bosch Distributor Cap Germany Distributor Cap Bosch Distributor Cap Daiichi Distributor Cap


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What is a distributor cap?

A distributor cap is a fairly inexpensive plastic cover that sits on top of the distributor shaft and protects the rotor and ignition parts. Since the distributor is responsible for the firing order of the valves, it's important that it be protected and not susceptible to extra sources of corrosion. The distributor cap encases the full top of the distributor shaft and sits just above the rotor and ignition points. The cap also has metal connectors or conductors sticking through the top that connect the spark plugs via spark plug wires. As the rotor turns and causes an electrical spark for each valve (or for each connector), that electricity gets carried up through the conductors in the cap, runs inside the spark plug wires, and then reaches the spark plugs where it ignites the gas and air combination inside the cylinder.

Are there different kinds of distributor caps?

Yes there are. There is the standard or original distributor mentioned above which is called a 'mechanical distributor' or can often be referred to as a 'points distributor.' There is a connecting rod located centrally in the middle of the distributor cap, and it connects to the ignition coil located separately from the distributor. When the coil sends spark, it goes into the central shaft, gets routed to the connectors for each cylinder by the rotor and ignition points, and then the spark is sent through the plug wires to the spark plugs. In the more recent form of distributor shaft and cap system, known as an HEI (High Energy Ignition) distributor, there are a few differences. There is no center post and the ignition coil is located on the distributor. The spark is sent through the cap in a certain firing order and is rotated by the rotor which is powered by a gear from the crankshaft.

Can a distributor cap fail or go bad?

It's really the expectation that your distributor cap will go bad or become worn so that it needs to be replaced. The whole cap is made of fairly inexpensive material just for that reason. Common causes of distributor cap wear would be corrosion in the connectors or ignition points, a crack in the outer casing, connections that become weaker from engine vibration, and any heat or burn damage from a malfunctioning coil or other problems that may occur in that area.

Is one type of distributor system easier to maintain than the other?

Distributor caps for the HEI distributors are definitely easier to maintain then that of the mechanical or points distributors. The points distributors have to bear more of the load as the coil is external and ignition points have to be the bridge to transfer the ignition spark. And since these systems are not one piece, they become corroded faster or wear quickly from engine vibration. HEI distributors are mostly a sealed system and don't corrode as quickly. They do not have to rely on an external coil or internal ignition points, so there are fewer parts involved. Because of this, HEI caps are changed a lot less frequently then their counterparts.

Will I know if I have a bad distributor cap?

There are definitely potential signs that will warn you about possible distributor cap failure. The most common would be the pistons firing out of order. This can cause misfires which can lead to backfires and it can cause the engine to run or idle very roughly. Other signs would include a weak spark which could lead to slower acceleration or dimmer lights, and you may also notice difficulty starting the vehicle, playing your radio, or rolling your windows up or down.

Acura Distributor Cap Audi Distributor Cap BMW Distributor Cap Chevrolet Distributor Cap
Chrysler Distributor Cap Daihatsu Distributor Cap Dodge Distributor Cap Eagle Distributor Cap
Ford Distributor Cap Geo Distributor Cap GMC Distributor Cap Honda Distributor Cap
Infiniti Distributor Cap Isuzu Distributor Cap Jeep Distributor Cap Jensen Healey Distributor Cap
Lexus Distributor Cap Mazda Distributor Cap Mercedes Benz Distributor Cap Mercury Distributor Cap
Mitsubishi Distributor Cap Nissan Distributor Cap Plymouth Distributor Cap Porsche Distributor Cap
Saab Distributor Cap Subaru Distributor Cap Suzuki Distributor Cap Toyota Distributor Cap
Volkswagen Distributor Cap Volvo Distributor Cap


We carry Daiichi Bosch Germany NGK Scan-Tech Japanese Beru Distributor Cap.

Acura EL 1.6 4dr (Canada) Acura Integra GSR B17 1.7 Acura Integra 1.8 GS 3dr
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Honda Accord 3.0 V6 4dr Honda Accord LXi 4dr (F/I) Honda Accord SEi 4dr (F/I)
Honda Civic 1.5 DX 2dr Honda Civic 1.5 DX 3dr Honda Civic 1.5 DX/LX 4dr
Honda Civic 1.5 GL 4dr Honda Civic 1.5 LX 4dr Honda Civic Hatch CX DX
Honda Civic 1.6 DX 2dr Honda Civic 1.6 DX/SE 4dr Honda Civic 1.6 EX 2dr
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Honda Civic Si B16A2 VTEC Honda Civic 1.6 Si 3Dr Honda Civic 1.6EX/EX-S 2dr
Honda CRV 2.0 B20 EX Honda CR-V 2.0 LX 2WD Honda CR-V 2.0 LX 4WD
Honda CRX 1.5 DX Honda CRX Si D16A6 Honda Del Sol 1.6 VTEC B16
Honda Odyssey 2.2 Honda Odyssey 2.3 Honda Prelude 2.0 Si
Honda Prelude 2.0 Si (F/I) Honda Prelude 2.2 (exc.SH) Honda Prelude H22 SI VTEC
Honda Prelude 2.2 Type-SH Honda Prelude H23 2.3 SI SE Infiniti QX4 3.3 4WD
Isuzu Amigo 2.3 Jeep Grand Cherokee Limited 4WD Jensen Healey Jensen Healey
Lexus LS400 V8 Lexus SC400 V8 Coupe Mazda 323 Hatchback
Mazda 323 Sedan Mazda 626 MX6 Mazda 626 MX6 V6
Mazda 929 S Mazda B2000 2WD Pickup Mazda B2600 4WD Pickup
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Mazda MX3 16V DOHC Mazda Protege DX, LX Mazda Protege LX
Mazda RX7 Mazda RX7 Turbo Mercedes Benz 190E 2.3
Mercedes Benz 280SEc/c 3.5 Mercedes Benz 300CE 24-Valve Mercedes Benz 300E
Mercedes Benz 300SE 3.2 Mercedes Benz 300SEL Mercedes Benz 380SL
Mercedes Benz 420SEL Mercedes Benz 500SEL Mercedes Benz 560SEL
Mercedes Benz E420 Mercedes Benz SL 600 Mercury Villager V6 3.0
Mitsubishi 3000GT 3.0 DOHC 2WD Mitsubishi Diamante 3.5 SOHC Mitsubishi Eclipse GT
Mitsubishi Galant 2.4 SOHC Mitsubishi Galant 3.0 V6 Mitsubishi Mirage 1.5
Mitsubishi Mirage 1.5 SOHC Mitsubishi Montero 3.0 Nissan 200SX 1.6 base/S
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Nissan Xterra 2WD 4-cyl. Nissan Xterra 2WD V6 Plymouth Voyager
Porsche 944 /1 Saab 9-3 3/5 Dr S Linear Saab 9-3 Conv. SE (Arc)
Subaru 2WD models 1.6 & 1.8 Subaru Justy 1.2 2WD Suzuki Samurai 1.3
Suzuki Sidekick SOHC 8VALVE Suzuki Swift DOHC 16 valve Toyota 4Runner 4Cyl 2WD SR5
Toyota 4Runner 4Cyl 4WD EFI Toyota 4Runner 4Cyl 4WD SR5 Toyota 4Runner 4Cyl 4WDCarb
Toyota 4Runner V6 2WD SR5 Toyota 4Runner V6 4WD SR5 Toyota Camry I4 2WD Sedan
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Toyota Celica AllTrac Turbo Toyota Celica GT Toyota Celica GT Cpe/LB/CVT
Toyota Celica ST Coupe Toyota Celica ST Cpe/L-Back Toyota Corolla 2Dr Coupe
Toyota Corolla 4Dr Sedan Toyota Corolla 4Dr Sedn 1.8 Toyota Corolla FWD Sedan
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Toyota Corolla Sedan/Coupe Toyota MR2 Toyota Pickup 4WD Std Bed
Toyota Pickup I4 4WD X-Cab Toyota Pickup Std/Long Bed Toyota Pickup V6 4WD X-Cab
Toyota Previa 2WD Toyota Truck Toyota Pickup Truck EFI
Toyota Pickup Truck Toyota RAV4 2WD/4-Door Toyota Starlet 3 door
Toyota Supra Non-Turbo Toyota T100 2WD 4Cyl RC1/2T Toyota Tacoma 2WD I4 RegCab
Toyota Tercel 2/3Dr EFI Toyota Tercel 2/4Dr EFI Toyota TercelSTD/DX 2/3/5Dr
Volkswagen Corrado SLC V6 Volkswagen Golf (Canada) 1.8L Volkswagen Golf GTI 16V
Volkswagen Golf GTI 8V Volkswagen Golf III GL Volkswagen Golf III GTI 4 CYL
Volkswagen Jetta GL Volkswagen Jetta GLI 16V Volkswagen Jetta III GL 4 CYL
Volkswagen Jetta III GLS 4 CYL Volkswagen Passat V6 Volkswagen Scirocco 16V
Volkswagen Type 4 Volvo 122 Volvo 160
Volvo 240 Volvo 260 V6 Volvo 850
Volvo 850 Turbo 2.3L Volvo 940 8-Valve
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