Air & Fuel Delivery
More informationAt the Global Parts automotive store, we offer a wide selection of original used car parts, including intake and fuel systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen and others. The intake and fuel systems we offer undergo quality control so that you can be sure that you are receiving a top-class product.
Make
Category
Subcategory
Condition
In Stock
Price
Part no. 9141957
BMW 1 3 5 7 Series E60 E87 E90 F10 F20 F30 Coolant line pressure sensor 9141957
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 2753136
Mini Cooper One R55 R56 R57 N14 Fuel Tank Injection Vent Pipe Hose 2753136
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A1635000275
Mercedes-Benz M-Class ML W163 Cooling Coolant Radiator Pipe Hose A1635000275
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 03C129617H
Volkswagen VW Touran 1T Air Intake Pipe Hose 1.4 TSI Petrol 03C129617H
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A1688302796
Mercedes-Benz A-Class W168 1 Heater Matrix Water Coolant Hose A1688302796
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7787457
BMW 5 Series E60 E61 LCI 520d N47N2 Radiator Coolant Vent Pipe Hose Petrol
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. CC119C623BE
Ford Transit MK7 2.2 TDCI Diesel Air Intake Pipe Hose CC119C623BE
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6420901642
Air Flow Mass Meter Mercedes W212 OM642 2 Turbo Pipe Line Duct A6420901642
€113.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A1664704000
Mercedes GLE 250 W166 Diesel Ad Blue Additive Tank Filler Pipe A1664704000
€142.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2045283282
Mercedes W212 Air Intake Hose OM651 Intercooler Charge Pipe Diesel A2045283282
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6080900400
Mercedes W177 Diesel OM608 Intercooler Pipe Hose Charge Air Hose 144607512R
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6460702095
Mercedes W639 W906 OM646 Fuel Injector Pressure Rail Line A6460701895
€118.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7529432
Inlet Manifold BMW X3 Z4 E83 E85 E87 E90 2.0i 120i 320i Air Intake 7529432
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 5N0145828D
Volkswagen VW Golf VI Diesel Intercooler Turbo Air Intake Pipe Hose 5N0145828D
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A1634700189
Mercedes Benz ML Class W163 Fuel Expansion Tank Bottle A1634700189
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 03C145851K
VW Touran 1T Petrol Engine Compressor Supercharger Cover Left N/S 03C145851K
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8513604
BMW 5 7 Series F01 F02 LCI F10 F11 N57N Coolant Hose Line Pipe Tube 8513604
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 04L130235J
Audi A3 8V Fuel Pipe Return Line Hose Injector 04L130235J
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 5140318AA
Chrysler Grand Voyager 2.8CRD ENR Diesel Air Hose Inlet Pipe Line 5140318AA
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8506896
BMW X3 E83 LCI 1.8d 2.0d N47 Diesel Engine Turbocharger Turbo 8506895
€227.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8577649
BMW 1 3 SERIES F20 F21 F30 116d 118d 318d Diesel N47N Set Fuel Injection System
€379.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8518205
Turbocharger BMW F20 F21 F30 F31 116d 318d N47N Diesel Turbo Charger 8518205
€303.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2534710015
Mercedes W205 Fuel Pipe Low Pressure Rail Purge Line Coil Valve A2534710015
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 11537545890
BMW 1 3 X1 Series E84 E87 E90 E91 E92 Cylinder Head Thermostat Hose 4518063
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7811127
BMW 1 3 Series F20 F21 F30 F31 N47N Radiator Coolant Water Pipe Hose 7811127
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 03N906081A
Air Temperature Sensor Audi A3 8V VW Golf Mk7 Air Intake Diesel 03N906081A
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7843274
BMW F10 M5 F06 F12 F13 M6 S63N Intake Manifold Air Inlet System Cyl. 1-4 7843274
€227.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 03C133518AS
Volkswagen VW Touran 1T Vacuum Hose Line Pipe 03C133518AS
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8513451
Air Charge Pipe BMW F10 F11 Diesel Turbo Intake Line Tube Hose Pipe 8513451
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8U0131963A
Audi Q3 8U AdBlue Filler Reducing Pipe Neck Line Hose 8U0131963A
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 059129955AE
Intake Hose Audi A8 D4 Q5 8R A6 C7 3.0 TDI Turbo Air Pipe Tube 059129955AE
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 1438761
BMW E46 Intercooler Pipe Intake Hose 1438761
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8V0201992C
Audi RS3 8V TT RS Engine Breather Fuel Pipe Line Hose 2.5 TFSI 8V0201992C
€75.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7521024
BMW 5 6 Series E60 E61 E63 E64 Air Duct Housing Rubber Boot 7521024
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7846246
BMW 3 4 Series F80 M3 F82 F83 M4 Charge Air Line Cylinders 4 - 6 Tube Hose Pipe
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7795142
Vacuum Pump BMW E46 E60 E61 E83 E53 Diesel Engine Vacuum Pump 7795142
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8053375
Filtered Air Pipe BMW X3 F97 X4 F98 Intake Filter Duct Hose Pipe 8053375
€56.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2711400787
Mercedes W203 W211 Kompressor M271 Petrol Supercharger Inlet Pipe
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 1477835
Air Inlet Duct Mini R50 R52 Intake Manifold Pipe Hose 1477835 1477838
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8575469
Fuel Line Mini Cooper R60 R61 Diesel N47N Fuel Injection Line Pipe 8575469
€37.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7011218
BMW E65 E66 Lower Radiator Air Deflector Duct Panel Bumper Trim 701121
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8658487
Thermostat Return Pipe BMW F40 Mini F55 F56 Heater Hose Line 8658487
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8687745
Mini F55 F56 Turbocharger Line Turbo Coolant Oil Feed Pipe BMW X1 F48 7643092
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 03C145851F
VW Touran 1T Petrol Engine Compressor Supercharger Cover Left N/S 03C145851F
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8K0919050Q
Audi A5 8T Diesel Fuel Pump Tank Sender Control Unit 8K0919050Q
€42.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 5Q0145838
Audi S1 8X A3 S3 8V VW Golf R 2.0 TFSI Air Charge Inlet Intake Pipe 5Q0145838
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8512014
Engine Air Intake BMW F10 F11 520d N47N Filtered Air Pipe Silencer 8512014
€37.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6510701532
Fuel Feed Hose Mercedes W204 W212 W639 W906 OM651 Return Line A6510701532
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 059145731CT
Audi A8 D4 3.0 TDI Intake Hose Air Charge Intercooler Pipe Line 059145731CT
€47.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6420104466
Mercedes W639 3.0 CDI Diesel Engine Dipstick Oil Guide Tube A6420104466
€37.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 3422609
BMW X3 Series E83 LCI 2.5si 3.0si N52N Air Intake Duct Pipe Rubber Boot 3422609
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6460700487
Mercedes W639 Diesel OM646 646982 646983 Fuel Injector A6460700487 0445110264
€142.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A1645281582
Mercedes-Benz ML W164 Air Charge Left Intercooler Hose Pipe Diesel A1645281582
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7619268
Mini F54 F55 F56 F57 F60 Filtered Air Intake Duct Hose Pipe 7619268
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8584207
BMW F40 X1 F48 Mini F55 F56 Turbo Charger Hose Pipe Bypass Valve 8584207
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7788999
Coolant Hose BMW E60 E61 E63 E65 Diesel Heat Exchanger Return Pipe 7788999
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 9672309580
Fuel Filter Housing Citroen C4 1.6 HDi Mount Bracket Support 9672309580
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 03G253014H
Volkswagen Golf MK5 Engine Turbocharger Turbo Charger 03G253014H
€194.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 059129955H
Audi A5 8T 3.0 TDI CCWA Air Intake Elbow Pipe Hose Tube Line Damper 059129955H
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2711400887
Supercharger Housing Mercedes W203 W211 Kompressor M271 Petrol Charger Cover
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 079133315AP
Audi A5 S5 8T 4.2 V8 FSI CAUA Fuel Injection Line Injectors Left N/S 079133315AP
€379.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8513855
Mini Cooper D F55 F56 B37 Intake Manifold With Flap Control 8513855
€332.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2710901937
Intercooler Pipe Mercedes W203 M271 Air Intake Cross Hose Pipe A2710901937
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 07K127501L
Audi RS3 8V TT RS Fuel Pump Injection Pipe Hose Line 2.5 TFSI Petrol 07K127501L
€56.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 2754806
Mini Cooper One R55 R56 R57 Fuel Pump Petrol Delivery Unit Sender 2752287
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8577649
BMW E90 E91 LCI 316d 318d Diesel N47N Set Fuel Injection System
€332.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2740900377
Turbo Oil Return Pipe Mercedes W204 W212 Turbocharger Line Hose A2740900377
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A1648300844
Air Duct Mercedes W164 Central Dashboard Air Vents Duct Ventilation A1648300844
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7568050
Mini Cooper S JCW R55 R56 R57 N14 Fuel Injection Rail Tube 7568050
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7176998
BMW 5 7 Series E61 E61 E65 Fuel Tank Pipe Hose Line 18X23MM 7176998
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 9364537
Radiator Pipe BMW F20 F21 F30 LCI Engine Return Hose 9364537
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6120901937
Mercedes ML W163 W203 W210 OM612 Inlet Intake Manifold A6120901937
€132.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 6909241
BMW Z4 Series E85 Radiator Coolant Vent Pipe Hose Petrol 6909241
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 31293547
Volvo V60 Air Intake Hose Turbo Intercooler Pipe Line Hose Diesel 31293547
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 03G145535E
Audi A5 8T 2.0 TDI CGLC Diesel Turbo Charger Bracket Support Holder 03G145535E
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6511800820
Mercedes W176 OM651 Turbo Oil Feed Pipe Turbocharger Lubrication Line
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 06J127501L
Audi TT 8J A4 B8 Petrol Engine Fuel Pipe Hose Feed Line Tube 06J127501L
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7458657
BMW F40 Plastic Fuel Petrol Filler Pipe 7458657
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6460900980
Turbocharger Mercedes W204 W211 OM646 Diesel Turbo Charger A6460900080
€146.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 3C0122073BR
Audi TT 8J Engine Cooling System Coolant Line Pipe Hose 3C0122073BR
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A0000942048
Mercedes Vito W639 Air Flow Mass Meter Sensor Control Unit A0000942048
€47.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7212632
Fuel Pump BMW X5 X6 E70 E71 F15 F16 Left N/S Delivery Unit Level Sensor 7212632
€66.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2762300265
Mercedes W204 W205 C207 W212 W213 Petrol Engine Vacuum Pump A2762300265
€42.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2760901600
Turbocharger Oil Pipe Mercedes C207 W212 M276.820 Return Line Hose A2760901600
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A2468300224
Mercedes GLA X156 Front Air Vent Duct Left N/S Cabin Ventilation A2468300323
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7807991
Manifold Elbow BMW E90 LCI F10 F11 F20 F21 F30 F31 Diesel N47N Inlet Intake
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7597085
MINI R55 R56 LCI R59 R60 R61 Hot Film Mass Air Flow Meter Sensor 7597085
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8507706
BMW F30 F31 F32 N57Z Charge Air Line Hose Intake Manifold Engine 8507706
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7148883
Mini Cooper One R55 R56 LCI Filler In Flap Fuel Cap Nightfire Red 7148883
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 1K0145834L
VW Golf MK 5 2.0 TDI Turbo Intercooler Air Intake Pipe Hose Line 1K0145834L
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6510900337
Air Intake Hose Mercedes W204 W212 W906 OM651 Pipe Duct Diesel A6510900337
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8511628
BMW F20 F21 F30 LCI B47 High Pressure Fuel Pump Mount Holder 8511628
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 8516591
Coolant Feed Line BMW F10 F30 F32 F25 N57Z Turbocharger Flow Pipe 8516591
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7796060
Fuel Pipe BMW X5 E70 X6 E71 Diesel M57N2 Return Line Hose 7796060
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6400901637
Intake Manifold Mercedes W169 W245 OM640 Diesel Inlet Air A6400901637
€32.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 06F133062Q
Audi TT 8J 1.8 TFSI Petrol Throttle Body Valve Flap 06F133062Q
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6510105811
Breather Hose Mercedes W205 Diesel OM651 Vent Tube Pipe A6510105811
€23.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. 7792869
BMW E65 730d Diesel M57N2 Fuel Pipe Return Line Hose Injector 7792869
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Part no. A6070700332
Fuel Pipe Mercedes W176 OM607 Return Line Hose Injector A6070700332
€28.95
Free delivery - Wed, Jul 02
If paid before 14:00
Comprehensive offer of used intake and fuel system parts – air filters, throttles, fuel pumps, injectors, and intake manifolds
What components make up the intake and fuel system?
Have you ever wondered what determines the performance and efficiency of your engine? The intake and fuel systems play a key role in ensuring the proper mixing of air and fuel, which translates into power, economy and ecology. In the Global Parts automotive store you will find a wide range of used car parts , such as air filters, **throttle valves , fuel pumps and fuel injectors . We offer parts for intake and fuel systems for BMW , Audi, Volkswagen , Mercedes and Mini, adapted to various models and needs.
How does the intake and fuel system work?
The intake and fuel systems are systems that work together to deliver a mixture of air and fuel to the combustion chamber. Each component of this system has a specific task:
- Fuel Pumps and Level Sensors – They are responsible for the correct supply of fuel to the engine and controlling its amount in the tank.
- Fuel tanks and filler pipes – They store fuel and allow it to be refueled safely.
- Air and fuel intake sensors – They monitor the amount of air and fuel supplied, optimizing engine operation.
- Throttles – Regulate air flow to the engine, affecting its performance and response to the gas pedal.
- Vacuum pumps – They support the operation of vacuum systems such as brakes and control valves.
- Air filters – They protect the engine against contamination by ensuring clean air in the combustion process.
- Fuel filters – Removes contaminants from fuel, protecting the injection system and fuel pump.
- Intake manifolds – Distributes air evenly into the cylinders, increasing combustion efficiency.
- Air filter housings – Protect air filters from damage and ensure their optimal operation.
- Cables, hoses and pipes – They transport fuel and air between individual system elements.
- Turbochargers, compressors and coolers – They increase the amount of air supplied to the engine, improving its performance.
- Injection systems and parts – They are responsible for precise fuel dosing to the cylinders, which affects combustion and engine efficiency.
- Fuel filler flaps and caps – They ensure the tightness of the refueling system and protection against leaks. Well-maintained intake and fuel system components not only impact performance, but also lower fuel consumption and reduce exhaust emissions.
Why is it worth taking care of the intake and fuel systems?
Regular maintenance and replacement of intake and fuel system components is essential for the proper functioning of every vehicle. Contamination or wear of parts can lead to:
- Reduce engine power.
- Higher fuel consumption.
- Damage to other components, such as turbochargers or catalytic converters. By choosing genuine used car parts , available at Global Parts, you can save on costs without compromising on quality and durability. In our offer you will find parts for intake systems that provide excellent engine performance.
How to choose the right intake and fuel system parts?
When deciding to purchase parts, pay attention to a few key aspects:
- Vehicle Model Matching – Every make and model has its own unique technical requirements. At Global Parts you will find parts tailored to your car, whether it is a BMW , Audi, Volkswagen , Mercedes or Mini .
- Technical condition – Check if components such as fuel lines , fuel pumps or injectors , are free from damage and ready for further use.
- Material of manufacture – For example, intake manifolds can be made of aluminum or plastic. Choosing the right material affects the durability and efficiency of work.
Why choose used parts for the intake and fuel system?
Used car parts are a great solution that allows you to combine high quality with savings. At Global Parts we offer a wide selection of components such as air filters, throttle valves or fuel injectors that have undergone detailed quality checks. Why is it worth choosing such a solution?
- Lower costs – Used components, such as fuel pumps or intake manifolds, are often much cheaper than new ones, and their quality remains high.
- Ecology – Choosing used car parts, you support recycling and reduce the amount of automotive waste.
- Wide availability – We offer parts for all the most popular brands, allowing for easy fit to your vehicle.
How to take care of the intake and fuel system?
To keep your engine running efficiently, regularly check the condition of your intake and fuel systems . Here are some tips:
- Change air filters regularly and check intake pipes for leaks.
- Keep your fuel injectors clean – contamination can reduce their efficiency.
- Check the condition of the fuel pump and lines to avoid problems with engine power. In case of failure or wear of components, you will find the right used car parts at Global Parts , which will help restore your vehicle to full working order.
Summary: Intake and Fuel System at Global Parts Automotive Store
The intake and fuel system is the basis for the proper functioning of every engine. By choosing the right parts, such as throttle valves, air filters, fuel injectors or fuel pumps, you can take care of your car's performance, reduce fuel consumption and limit exhaust emissions. The Global Parts automotive store cordially invites you to familiarize yourself with our wide range of original used car parts . Regardless of whether you are looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini and others - you will find them with us at competitive prices. We make every effort to ensure that every customer finds the right parts for their car/car with us, and in case of any questions or doubts related to the selection of the right components, we will be happy to help! Please contact us - we are here to help you! For more information and curiosities, we also invite you to our automotive blog .