Descripition
- Brand:NGK
- Part Number(s):4221
- ProductName:Spark Plug
Cross Interchange Parts
| Factory | Number |
|---|---|
| AUTOLITE | 2526 |
| DENSO | 3103 |
| DENSO | W25EB |
| DENSO | W25EBR |
| MOTORCRAFT | AGR16C |
| MAZDA | 3649-18-600 |
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Interchange Parts for NGK 4221
| Brand | Sku | Type | Name | Relevance | |
|---|---|---|---|---|---|
| AUTOLITE | 2526 | Autolite Resistor Plug | AUTOLITE 2526 Autolite Resistor Plug | Direct | Details» |
| DENSO | 3103 | Spark Plug | DENSO 3103 Spark Plug | Direct | Details» |
| DENSO | W25EB | Spark Plug | DENSO W25EB Spark Plug | Direct | Details» |
| DENSO | W25EBR | Spark Plug | DENSO W25EBR Spark Plug | Direct | Details» |
| MOTORCRAFT | AGR16C | Spark Plug | MOTORCRAFT AGR16C Spark Plug | Direct | Details» |
| MAZDA | 3649-18-600 | Spark Plug | MAZDA 3649-18-600 Spark Plug | Direct | Details» |
| DENSO | 3039 | Autolite Resistor Plug | DENSO 3039 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3040 | Autolite Resistor Plug | DENSO 3040 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3079 | Autolite Resistor Plug | DENSO 3079 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3080 | Autolite Resistor Plug | DENSO 3080 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3081 | Autolite Resistor Plug | DENSO 3081 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3082 | Spark Plug | DENSO 3082 Spark Plug | Indirect | Details» |
| DENSO | 3083 | Autolite Resistor Plug | DENSO 3083 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3100 | Autolite Resistor Plug | DENSO 3100 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3101 | Autolite Resistor Plug | DENSO 3101 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3102 | Autolite Resistor Plug | DENSO 3102 Autolite Resistor Plug | Indirect | Details» |
| NGK | 4528 | Spark Plug | NGK 4528 Spark Plug | Indirect | Details» |
| NGK | 4582 | Autolite Resistor Plug | NGK 4582 Autolite Resistor Plug | Indirect | Details» |
| NGK | 4628 | Autolite Resistor Plug | NGK 4628 Autolite Resistor Plug | Indirect | Details» |
| NGK | 4764 | Double Platinum Plug | NGK 4764 Double Platinum Plug | Indirect | Details» |
| NGK | 5255 | Double Platinum Plug | NGK 5255 Double Platinum Plug | Indirect | Details» |
| NGK | B 8ET | Spark Plug | NGK B 8ET Spark Plug | Indirect | Details» |
| NGK | BR7EM | Non Resistor Spark Plug | NGK BR7EM Non Resistor Spark Plug | Indirect | Details» |
| NGK | BR7EQ-14 | Autolite Resistor Plug | NGK BR7EQ-14 Autolite Resistor Plug | Indirect | Details» |
| NGK | BR8EQ | Autolite Resistor Plug | NGK BR8EQ Autolite Resistor Plug | Indirect | Details» |
| NGK | BR8EQ-14 | Spark Plug | NGK BR8EQ-14 Spark Plug | Indirect | Details» |
| NGK | BR 8ET | Spark Plug | NGK BR 8ET Spark Plug | Indirect | Details» |
| NGK | BR9EQ-14 | Spark Plug | NGK BR9EQ-14 Spark Plug | Indirect | Details» |
| NGK | BR9ET | Spark Plug | NGK BR9ET Spark Plug | Indirect | Details» |
| NGK | BUR7EQP | Spark Plug | NGK BUR7EQP Spark Plug | Indirect | Details» |
| NGK | BUR9EQP | Spark Plug | NGK BUR9EQP Spark Plug | Indirect | Details» |
| BOSCH | 0 242 255 501 | Spark Plug | BOSCH 0 242 255 501 Spark Plug | Indirect | Details» |
| CHAMPION | N 178 B | Spark Plug | CHAMPION N 178 B Spark Plug | Indirect | Details» |
| CHAMPION | N 179 BC | Spark Plug | CHAMPION N 179 BC Spark Plug | Indirect | Details» |
| CHAMPION | N 180 B | Spark Plug | CHAMPION N 180 B Spark Plug | Indirect | Details» |
| CHAMPION | RN179BC | Autolite Resistor Plug | CHAMPION RN179BC Autolite Resistor Plug | Indirect | Details» |
| CHAMPION | RN180B | Spark Plug | CHAMPION RN180B Spark Plug | Indirect | Details» |
| MOTORCRAFT | AGR803C | Autolite Resistor Plug | MOTORCRAFT AGR803C Autolite Resistor Plug | Indirect | Details» |
| MOTORCRAFT | AGS081C | Autolite Resistor Plug | MOTORCRAFT AGS081C Autolite Resistor Plug | Indirect | Details» |
| NGK | 2329 | Spark Plug | NGK 2329 Spark Plug | Indirect | Details» |
| NGK | 2929 | Spark Plug | NGK 2929 Spark Plug | Indirect | Details» |
| NGK | 3129 | Spark Plug | NGK 3129 Spark Plug | Indirect | Details» |
| NGK | 3221 | Autolite Resistor Plug | NGK 3221 Autolite Resistor Plug | Indirect | Details» |
| NGK | 3328 | Autolite Resistor Plug | NGK 3328 Autolite Resistor Plug | Indirect | Details» |
| NGK | 3821 | Spark Plug | NGK 3821 Spark Plug | Indirect | Details» |
| DENSO | 3104 | Spark Plug | DENSO 3104 Spark Plug | Indirect | Details» |
| DENSO | 3105 | Autolite Resistor Plug | DENSO 3105 Autolite Resistor Plug | Indirect | Details» |
| DENSO | 3107 | Spark Plug | DENSO 3107 Spark Plug | Indirect | Details» |
| DENSO | 5719 | Iridium Plug | DENSO 5719 Iridium Plug | Indirect | Details» |
| DENSO | IRE01-27 | Iridium Plug | DENSO IRE01-27 Iridium Plug | Indirect | Details» |
Application of NGK 4221
| Make | Modle | Engine | CC | KW | cylinder | Type | Year |
|---|---|---|---|---|---|---|---|
| MAZDA | RX 7 | Wankel | 1146 | 77 | 2 | Coupe | 1979-1981 |
| MAZDA | RX 7 | Wankel | 1146 | 85 | 2 | Coupe | 1981-1984 |
| MAZDA | RX 7 | Wankel | 1146 | 83 | 2 | Coupe | 1984-1986 |
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