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Bosch 0445110638 Diesel Injector
BOSCHPart No: 0445110638
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Commonly replaced to help resolve rough idle, injector knock, excess smoke, or poor fuel economy on BKD diesel engines, the Bosch 0445110638 is supplied remanufactured, flow-tested, and covered by a 12 months warranty. Each unit is supplied with a 12 months warranty and free UK delivery.
(per injector)
+ £20 refundable core deposit per injector — refunded when your old unit is returned within 30 days
All prices are shown in GBP (£). International customers are securely charged in GBP via Stripe.
Dispatch within 24h. Free UK delivery.Save 38% vs OEM price
Professionally remanufactured to OEM standards
Ordering a single injector is standard practice.
Need multiple injectors? Simply increase the quantity above.
Every order includes a 12-month workshop warranty, OEM bench-calibration before despatch.
Most 4-cylinder engines use 4 injectors — replace only what your diagnosis confirms.
12-Month Warranty
Included on every remanufactured injector. UK-based support if you ever need it.
Tested Before Dispatch
Flow-tested and calibrated on OEM-grade rigs. Test report on file for every unit.
Free UK Delivery
Mainland tracked dispatch. Order before 2pm for same-working-day pick-up.
Trade buyers: VAT receipt included · Account terms on request · Trusted by UK garages & diesel specialists.
Why Buy From Us
Not sure this is the right injector? Call us on 020 3355 6581
FREE UK Delivery
International Delivery — flat £50 per order
One injector or multiple injectors
Ships Worldwide
FREE UK Delivery
Flat £50 International Shipping
- Royal Mail Tracked
- DPD International
- Secure Packaging
- Tracking Number Included
- 12 Month Warranty
Need more later? We keep stock available for repeat orders.
Engine Intelligence
VW / Audi / Seat / Skoda 2.0 TDI PD (BKD era — unit injector) BKD
Common symptoms
- Rough idle with single-cylinder knock
- Hard starting, especially cold
- Loss of power / limp mode
- Misfire entries on individual cylinders
- Increased tappet-style noise from the head
Documented failure modes
- Unit injector (Pumpe-Düse) wear causing calibration drift and rough running
- Injector solenoid faults logging cylinder circuit codes
- Injector loom and connector wear under the rocker cover causing intermittent faults
Diagnostic guidance
- This is a Pumpe-Düse (unit injector) system — there is no common rail; diagnosis differs from CR engines
- Check the injector wiring loom under the rocker cover first — it is a known wear point on this platform
- Unit injectors are cam-actuated: inspect the camshaft lobes when replacing injectors on high-mileage engines
- Torque and alignment of the injector clamps is critical — follow the manufacturer procedure exactly
Fitment note: PD unit injectors differ by output and production year — match the 038130073/03G130073 reference etched on the injector body, not just the engine code.
Why this injector?
- Fits the BKD engine code used in the AUDI A3 and related diesel variants.
- Bosch diesel injector — flow-tested and calibrated on common-rail equipment before despatch.
- Commonly specified when investigating rough idle, injector knock, smoke or poor fuel economy on BKD engines.
- 12-month warranty, free UK delivery and no core exchange required.
Explore this range
Remanufacturing Process
See how our injectors are rebuilt step-by-step in our 3D remanufacturing process video.
Vehicles Compatible With This Bosch Injector
Compatible with AUDI engines including BKD, BMM, BMN, CAHA, CAHB and 2 more.
Vehicles Using This Injector
Compatible Engines
The 0445110638 injector is compatible with the following engines:
Also known as
This injector is sold and listed under the references below. Tap any number to copy it — every reference refers to this same product.
All references resolve to this canonical product page. Always confirm exact fitment before ordering.
Compatible Vehicles
This injector fits the following vehicles. Always confirm exact fitment by engine code or registration before ordering.
Product Description
Commonly replaced to help resolve rough idle, injector knock, excess smoke, or poor fuel economy on BKD diesel engines, the Bosch 0445110638 is supplied remanufactured, flow-tested, and covered by a 12 months warranty.
Each unit is supplied with a 12 months warranty and free UK delivery.
Workshop Information
Installation Notes
- Professional injector coding may be required after installation
- Use calibrated test equipment for verification
- Check engine-specific torque values before installation
Recommended Injector Coding
No injector coding is required for the Bosch unit on most applications — follow the manufacturer fitting procedure.
Replacement Advice
Always renew the copper washers / seals and bleed the fuel system before first start. Replace only the injectors your diagnosis confirms and torque fasteners to the manufacturer's published values.
Professional Installation
We recommend installation by a suitably equipped diesel specialist using calibrated test equipment to verify the fuel system after fitting.
Common Engines Using This Injector
Common Symptoms of a Failed 0445110638 Injector
If your vehicle shows these symptoms, replacing the diesel injector may restore engine performance. A leak-off test can confirm the diagnosis.
Testing & Warranty
All remanufactured injectors are tested using OEM-grade diagnostic equipment to ensure fuel pressure and spray pattern meet manufacturer specifications.
OEM Test Bench Calibration
Flow-tested on Bosch EPS 200 series bench to verify fuel delivery rates at all operating pressures.
Leak-Off Testing
Each injector is tested for return flow to ensure no excess fuel is wasted back to the tank.
Solenoid Calibration
Electrical response time verified to ensure precise injection timing and quantity.
12-Month Warranty
Full replacement or refund covering manufacturing defects under normal use. No quibble.
0445110638 Price Statistics
Average Price
£250.00
inc. VAT
Price Range
£250–£250
inc. VAT
Stock
30/30
In Stock
Prices based on 30 listings for the 0445110638 injector. All prices include VAT.
Compatible Vehicles for 0445110638
0445110638 is OE-fit on the vehicles below. Always confirm the engine code on your V5C and the OE marking on the failed unit before ordering — sister part numbers in this family can look identical but carry a different calibration map.
Engine Codes Using 0445110638
This injector is used in the following diesel engine codes. View engine-specific problems and diagnostics:
Cross Reference Numbers for 0445110638
The following part numbers are cross-referenced to 0445110638 and may be used as direct replacements:
Related Fault Codes
If your vehicle has flagged any of these fault codes, the 0445110638 injector may need testing or replacement:
Injector Problem Guides
Experiencing issues with your diesel injector? These guides cover common injector problems and diagnosis:
Injector Testing Guides
Learn how to test and diagnose diesel injectors before ordering a replacement:
Other Injectors for This Engine
Frequently Asked Questions
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Cross References
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Workshop Knowledge for This Injector
Common Symptoms
Workshop Guides
Every remanufactured injector includes a 12-month warranty and is bench-tested to OEM spec before dispatch.
Old-unit exchange applies — your core surcharge is refunded when we receive your old injector.
Not sure if 0445110638 fits your vehicle?
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