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BrandOPTIMAL
MPNAQ-1212
OE refs7
SKU0129-AQ-1212
GTIN / EAN4031185035477

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Details

SpecificationValue
BrandOPTIMAL
MPNaq-1212
Thread SizeM8
Thread Size 1M6x20
Impeller Diameter [mm]79 mm

OE/OEM numbers (7)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE XS4J8591DB. The red ring marks where this part installs on the vehicle.

Kit - Water Pump Repair — Fiesta Fiesta JxS (1995–2006) — Water Pump
Fiesta Fiesta JxS (1995–2006) · Water PumpPosition 1

About this product

When water pump engine cooling performance matters, the OPTIMAL AQ-1212 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Thread Size: M8 Thread, Supplementary Article/Supplementary Info: 35, Supplementary Article/Supplementary Info: 0, Number of threaded holes: Copper, Thread Size 1: M6x20. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with FORD vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 1 078 500, 1 079 085, 1 104 115, 1 131 878 and 33 more. Matching these numbers confirms a like-for-like replacement with no loss of function. OPTIMAL 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.

About OPTIMAL

OPTIMAL, founded in Germany, is a well-regarded aftermarket brand specialising in steering, suspension, and wheel bearing components. OPTIMAL produces ball joints, tie rod ends, control arm bushings, wheel bearings, and stabiliser links for European, Asian, and American vehicle applications. Manufactured to stringent quality standards with comprehensive testing protocols, OPTIMAL parts deliver OE-matching fit and performance. Known for excellent value and wide vehicle coverage, OPTIMAL is a popular choice among professional workshops across Europe.

Suitable cars

Equivalent products (30)

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BUGATTIPA6012
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FIRST LINEFWP1790
GK980709
GNSYH-F133
GPPA967
GRAFPA742
HEPUP237£65.99
IDROMECPA34045
MEYLE713 220 0001
NAPANWP1204
PIERBURG7.28621.00.0
QUINTON HAZELLQCP3410
RUVILLE65209
STARLINEVP F133
SWAG50 91 9644
TRISCAN8600 16010
VAICOV25-50010

Water Pump Engine Cooling OPTIMAL AQ-1212compatible car models

Car modelsFORD: C-MAX (DM2), FIESTA Box Body/MPV (J5, J3), FIESTA Hatchback Van (JV), FIESTA IV (JA, JB), FOCUS C-MAX (DM2), FOCUS I (DAW, DBW), FOCUS II (DA, HCP, DP), FOCUS II Saloon (DB, FCH, DH), FOCUS II Turnier (DA, FFS, DS), FOCUS I Saloon (DFW) (+8 more)
Engines1.8 TDCi; 1.8 DI; TD 1.8; 1.8 DI / TDDi; 1.8 Di
Year of manufacture1995-2015
Manufacturer article number (MPN)AQ-1212
OE part numbers1 078 500, 1 079 085, 1 104 115, 1 131 878, XS4J 8591 AC, XS4J 8591 DB, XS4Q 8501 AC
Compatibility check

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Description and what's included

OPTIMAL aq-1212 . Impeller Diameter [mm]: 79 mm. Number of threaded holes: 4. Supplementary Article/Supplementary Info: 0. Supplementary Article/Supplementary Info: 35. Thread Size: M8. Thread Size 1: M6x20

What's included:
  • 1x Water Pump Engine Cooling
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Express and standard shipping available.

  • Standard delivery: 2-5 business days
  • Express delivery: 1-2 business days
  • 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 Water Pump Engine Cooling compatible with my car?

This Water Pump Engine Cooling fits FORD 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 OPTIMAL Water Pump Engine Cooling have?

This OPTIMAL Water Pump Engine Cooling has the following specifications: Thread Size: M8; Supplementary Article/Supplementary Info: 35; Supplementary Article/Supplementary Info: 0; Number of threaded holes: 4; Thread Size 1: M6x20; Impeller Diameter [mm]: 79 mm. Check the full specifications table above for complete details.

What OE part numbers does this Water Pump Engine Cooling replace?

This Water Pump Engine Cooling replaces OE part numbers: 1 078 500, 1 079 085, 1 104 115, 1 131 878, XS4J 8591 AC, XS4J 8591 DB, XS4Q 8501 AC. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Water Pump Engine Cooling cost?

Water Pump Engine Cooling prices vary depending on brand, specifications, and vehicle compatibility. Check the current price above for this OPTIMAL Water Pump Engine Cooling. All parts come with our 14-day money-back guarantee.

How do I know when to replace my Water Pump Engine Cooling?

Signs include coolant leaks near the front-centre of the car, whining or grinding noise from the engine, engine overheating, or steam coming from the radiator. Water pumps typically last 60,000-90,000 miles.

What tools do I need to replace a Water Pump Engine Cooling?

Tools needed: coolant drain pan, hose clamp pliers, 8-13mm socket set, torque wrench, gasket scraper, new coolant (correct specification). Difficulty: Professional recommended. Safety warning: Never open the cooling system when the engine is hot -- pressurised coolant will cause severe scalding. Allow to cool completely before draining.

Can I use this part as a replacement for OE 1 078 500?

Yes, this OPTIMAL Water Pump Engine Cooling is a direct replacement for OE part number 1 078 500. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.

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