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Details
| Specification | Value |
|---|---|
| Brand | ERA |
| MPN | zm421 |
| Voltage [V] | 12 V |
OE numbers (4)
Where this part fits
Original-fit position for OE 4557709. The red ring marks where this part installs on the vehicle.
About this product
Sourced from ERA, this solenoid switch starter (ZM421) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Voltage [V]: Zinc V — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit CHRYSLER, DODGE, HARLEY-DAVIDSON, LAND ROVER and 4 other makes models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 128000-0714, 128000-0938, 136606, 227304 and 28 more. Matching these numbers confirms a like-for-like replacement with no loss of function. ERA is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Equivalent products (32)
Show all 32 OE numbers
Solenoid Switch Starter ERA ZM421 — compatible car models
| Car models | CHRYSLER: VOYAGER / GRAND VOYAGER III (GS, NS), VOYAGER II (ES), VOYAGER IV (RG, RS); DODGE: CARAVAN; HARLEY-DAVIDSON: BAD BOY, DYNA; LAND ROVER: FREELANDER I (L314); LEXUS: RX (MCU15), RX (U3); PLYMOUTH: VOYAGER / GRAND VOYAGER; ROVER: 75 I Tourer (RJ), 75 (RJ); TOYOTA: AVENSIS Saloon (T25), AVENSIS (T22), AVENSIS VERSO (M2), CAMRY Saloon (V3), CAMRY (V2), PREVIA II (R3), RAV 4 II (A2), RAV 4 III (A3) |
|---|---|
| Engines | 3.3 i; 3.3; 1340 Bad Boy (FXSTB); 1340 Dyna Glide Convertible (FXD); 2.0 Td4 4x4; 300 AWD (MCU15); 300 (MCU35, MCU35R); 2.0 CDTi; 2.0 CDT; 2.4 VVT-i (AZT251, AZT251R); 2.0 VVT-i (AZT220, AZT220R); 2.0 VVT-i (ACM20, ACM20R); 2.4 (ACV30, ACV36); 2.2 (SXV20); 2.4 (ACR30) (+2 more) |
| Year of manufacture | 1990-2014 |
| Manufacturer article number (MPN) | ZM421 |
| OE part numbers | 4557709, 4686045, 4686109, 5234509 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
ERA zm421 . Voltage [V]: 12 V
- 1x Solenoid Switch Starter
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 4–8 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Solenoid Switch Starter compatible with my car?
This Solenoid Switch Starter fits CHRYSLER, DODGE, HARLEY-DAVIDSON, LAND ROVER, LEXUS and 3 more vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this ERA Solenoid Switch Starter have?
This ERA Solenoid Switch Starter has the following specifications: Voltage [V]: 12 V. Check the full specifications table above for complete details.
What OE part numbers does this Solenoid Switch Starter replace?
This Solenoid Switch Starter replaces OE part numbers: 4557709, 4686045, 4686109, 5234509. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Solenoid Switch Starter cost?
This ERA Solenoid Switch Starter is available for £29.99. Solenoid Switch Starter prices vary depending on brand, specifications, and vehicle compatibility. ERA parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Solenoid Switch Starter?
Regular inspection of your Solenoid Switch Starter is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Solenoid Switch Starter?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Solenoid Switch Starter fitted by a professional mechanic.
Can I use this part as a replacement for OE 4557709?
Yes, this ERA Solenoid Switch Starter is a direct replacement for OE part number 4557709. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the ERA ZM421 the same as the ERA ZM1391?
No, while both are Solenoid Switch Starter parts, they are different products. The ERA ZM421 has Voltage [V]: 12 V. The ERA ZM1391 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
