Compare BMW Z4 sDrive35Is replacement engine prices from trusted UK suppliers. Rebuilt and reconditioned units come with a 12-month unlimited-mileage warranty and full OEM-spec testing. Save up to 60% versus a main dealer quote.
Need a reliable replacement engine for your BMW Z4 sDrive35is?
Engine Finders specializes in Z4 sDrive35is engines, addressing common N54B30T0 issues such as high-pressure fuel pump (HPFP) failures and turbocharger wastegate rattle. Our rebuilt units include updated HPFPs and reinforced components for lasting performance.
Rebuilds with OEM pistons, addressing N54 turbo and injector issues.
Factory-spec rebuilds with upgraded timing chain and cooling fixes.
Inspected N54 units with refreshed seals and injector replacements.
Direct OEM swaps, ready to fix turbo and HPFP problems quickly.
Cleaned and dyno-tested N54s with updated injectors and water pumps.
Verified mileage units with service history, common HPFP fixes applied.
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW Z4 sDrive35is replacement engines. From the high-performance N54B30TO engine with its specific overboost function to the upgraded cooling system variants, we specialize in the unique powertrain requirements of the sDrive35is. Whether you need a replacement due to specific charge air cooling system failures common in the N54B30TO or high-pressure fuel pump issues exacerbated by the overboost function, Engine Finders makes it easy to locate the right engine, fast.
Our reconditioned engines include upgraded turbochargers (OEM 11657604073) specifically addressing the N54B30TO's unique overboost stress patterns in sDrive35is models from 2010-2016, preventing the wastegate rattle and boost pressure drops common to this high-performance variant.
We install reinforced HPFP units (OEM 13537585279) specifically calibrated for the sDrive35is's increased fuel demand during overboost function, solving the cold-start misfires and power loss issues unique to the N54B30TO engine in this model.
Our reconditioned engines feature upgraded intercooler systems addressing the specific heat management requirements of the sDrive35is's overboost function, preventing the intake air temperature-related power reduction common in E89 chassis models.
Each engine includes proper DME programming for the sDrive35is's unique MSD81 ECU (OEM 9269230) with overboost mapping, ensuring seamless integration without the power reduction warnings common with generic N54 replacements.
We replace the sDrive35is-specific auxiliary radiator (OEM 17117563461) and upgraded water pump that handle the additional thermal load from the overboost function, preventing the cooling system failures prevalent in high-performance driving.
Our engines include modified VANOS solenoids (OEM 11367541625) and reinforced camshaft ledges specifically addressing the increased valve train stress from the sDrive35is's aggressive cam timing during overboost operation.
We ensure proper fitment with the sDrive35is-specific performance exhaust with electronically controlled valve (OEM 18307565213), maintaining the distinctive sport exhaust note and avoiding CEL issues common with incorrect engine replacements.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW Z4 sDrive35is replacement engines. From the high-performance N54B30TO engine with its specific overboost function to the upgraded cooling system variants, we specialize in the unique powertrain requirements of the sDrive35is. Whether you need a replacement due to specific charge air cooling system failures common in the N54B30TO or high-pressure fuel pump issues exacerbated by the overboost function, Engine Finders makes it easy to locate the right engine, fast.
The Z4 sDrive35is (2010-2016) represents the pinnacle of E89 chassis performance, featuring the exclusive N54B30TO engine with 340hp and 332 lb-ft of torque. This model introduced BMW's Performance Power Kit with specific overboost function and upgraded cooling systems. The N54B30TO in the sDrive35is often suffers from turbocharger wastegate failure (OEM 11657604073) and high-pressure fuel pump issues (OEM 13537585279) exacerbated by the aggressive overboost calibration. BMW Service Bulletin SI B12 14 11 addresses charge air cooling concerns specific to N54 engines, which manifests uniquely in the sDrive35is due to its different intercooler configuration and engine management calibration compared to other N54 applications in the 1 Series and 3 Series.
The sDrive35is features a single high-performance engine configuration throughout its production, with specific variants for different markets:
The sDrive35is features unique engine mounting points and accessory drive configuration compared to other N54 applications, requiring specific replacement engines calibrated for this high-performance roadster.
For sDrive35is owners, we offer several engine options tailored to this high-performance vehicle's specific requirements:
For sDrive35is with N54B30TO engines, we recommend remanufactured engines due to common turbocharger and high-pressure fuel pump failures specific to this high-performance application.
Our reconditioned sDrive35is engines include comprehensive upgrades addressing common failure points:
Each engine undergoes comprehensive testing including boost pressure verification, fuel system validation, and dynamic balancing to ensure reliability in the sDrive35is's high-performance application.
We offer comprehensive warranty coverage for all sDrive35is replacement engines:
Engine Finders acts as a price comparison website connecting you with verified specialists. All warranty claims are handled directly by the supplying specialist according to their terms and conditions.
When your engine fails, BMW Z4 sDrive35is engine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
Step 1: Full teardown of N54T block, checking cylinder liners for scoring and piston crown carbon buildup.
Step 2: Replacement of HPFP and injectors with latest index 12 for Z4 calibration.
Step 3: Turbochargers rebuilt, wastegate arms reinforced to fix common rattle issues in 2010-2016 units.
Step 4: VANOS solenoids cleaned/replaced, recalibrated for Z4-specific ECU maps ensuring smooth torque.
Step 5: Head gasket replaced, bolts torqued to 30Nm + 90° following N54T-specific service bulletin specs.
Step 6: Final dyno test verifies 335hp baseline and 369 lb-ft overboost performance calibration.