S4 021 Bosch Car Battery 12V 45Ah Type 048 - 545156033, 4 Years Warranty

Product Number: S4021

Reliable cold-weather starting performance is a fundamental requirement for any conventional petrol or diesel vehicle, yet ageing or undersized batteries frequently fail to deliver adequate cranking power. The Bosch S4021 is a 12V 45Ah lead-acid starter battery engineered to meet that demand, offering 330A cold cranking amps (EN) and consistent power delivery across a wide range of operating conditions. Manufactured to Bosch's S4 series specification, the S4021 uses full frame grid technology to maximise active material utilisation and extend service life. Flushed battery covers minimise the risk of acid leakage during handling and installation, whilst robust carry handles support safe transportation. The design is built in accordance with OEM requirements, ensuring dependable performance equivalent to factory-fit standards. The S4021 measures 238mm (L) x- 129mm (W) x- 227mm (H inc. terminal), weighs 11.43kg, and is supplied with a Type 0 (positive right) terminal polarity and B00 hold-down configuration. It is a direct replacement for Type 048 and Type 053 applications. Bosch part cross-reference: 545156033. This battery is not suitable for start-stop vehicles. This product is one of ten variants in the Bosch S4 range stocked by MachineRefurb, covering a broad spread of capacities and fitments. Related SKUs include S4000, S4001, S4002, S4004, S4005, S4018, S4019, S4020, S4022, and S4023. The S4021 is backed by a 4-year manufacturer warranty, providing long-term assurance for trade and retail buyers alike. . The Bosch S4 Battery ensures a powerful start for all types of vehicles and offers long service life, flushed tops for minimized risk of acid leakage, and dependable power in accordance with OEM requirements. It uses full frame grid technology, highly protective pocket separators and robust connections inside to extend lifetime and maximize reliability. Key Feature: Backed by 4-year warranty for reliable use and dependable performance. Robust handles for easy and safe installation and transportation. Flushed battery covers that minimize the risk of spilled acid which can destroy terminal posts, battery cover and surroundings of the battery in a vehicle. Full frame grid - for optimum current flow and reduced corrosion. Compatibility: Suited for passenger cars, balancing reliable cold-cranking performance with long service life for daily use. Uses: Restores dependable starting for vehicles that need consistent, everyday performance. Suited to Lead acid battery applications, delivering steady operation in daily driving conditions. Supports stable power delivery for ignition, lighting, and onboard electronics. Performs reliably across short trips and longer runs where dependable restarts are essential. About MachineRefurb: MachineRefurb is an e-commerce platform specialising in replacement parts, spares and consumables for construction, agriculture and industrial machinery, serving customers across Ireland, the United Kingdom and Europe. We offer an extensive catalogue of over 200,000 products to keep your machines running. Standard delivery: 1-7 working days across Ireland, the UK and Europe. Fitment Warning: You must check your current battery against the specifications of this battery before ordering to ensure that this is the correct battery for your vehicle. Check battery technology, dimensions, terminal type, polarity, capacity (AH) and cranking performance (CCA). We cannot guarantee correct fitment under any circumstances.