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CP247
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BrandOPTIMAL
MPNA-1445G
OE refs5
SKU0129-A-1445G
GTIN / EAN4031185207225

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Details

SpecificationValue
BrandOPTIMAL
MPNa-1445g
Fitting PositionFront Axle
Thread SizeM12x1.5
Piston Rod Length [mm]237 mm
Bore Diameter 1 [mm]12 mm
Bore Diameter 2 [mm]12 mm
Distance of mounting bores [mm]45 mm
Piston Rod Diameter [mm]15 mm
Suspension Strut Outer Diameter [mm]47 mm

OE numbers (5)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE 4F0413031AS. The red ring marks where this part installs on the vehicle.

Gas shock absorber marked with: ***** Caution Hazardous ****** — A6 A6/S5 Avant Quattro C6 (Typ 4F) (2005–2011) — Shock absorbers
A6 A6/S5 Avant Quattro C6 (Typ 4F) (2005–2011) · Shock absorbersPosition 2

About this product

OPTIMAL shock absorber (A-1445G) restores factory damping characteristics by controlling spring oscillation on both compression and rebound strokes, recovering steering precision and reducing body roll. Damping configuration — Fitting Position: Front Axle, Shock Absorber Type: Aluminium, Shock Absorber Design: Cast Iron, Shock Absorber System: Aluminium — is tuned to the original suspension geometry so spring rates and ride height are unaffected, preserving the manufacturer's comfort and handling balance. Mounting dimensions, piston diameter, and stroke length replicate the OEM unit on AUDI applications, allowing a straight-swap installation without drilling or bracket modification. Supersedes manufacturer part numbers: 111014.0, 126 625 0005, 133049, 1707G-012F and 24 more. OPTIMAL dampers are gas-pressure charged, zero-leakage tested on a servo-hydraulic rig, and carry a 2-year unlimited-mileage warranty against manufacturing defects. Shock absorbers gradually lose damping force over time and should be inspected at 50,000 miles and replaced by 80,000–100,000 miles — even if they are not visibly leaking, internal valve wear reduces their effectiveness. Warning signs include excessive body roll in corners, nose-dive under braking, rear-end squat during acceleration, uneven tyre wear, and a bouncy or floaty ride — a simple bounce test (push down on each corner and release) can reveal weak dampers. Shock absorber replacement is an intermediate DIY task that requires spring compressors (for strut-type assemblies), a torque wrench, and penetrating oil for corroded fasteners — allow 2–3 hours per axle. When selecting shock absorbers, match the damper type (twin-tube, monotube, or gas-pressurised) to the original specification — upgrading to a different type can alter ride height and handling characteristics. Always replace shock absorbers in pairs (both sides of the same axle) to maintain balanced handling, and have the wheel alignment checked afterwards — worn dampers often allow geometry to drift out of specification. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with 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 (23)

Show all 23 OE numbers
AL-KO202003
AL-KO2200G
BOGE32-N66-A
FEBEST1707G-012F
FEBEST17110-004F
GABRIELG51126
HERTH+BUSS JAKOPARTSJ4300892
KYB341822£66.99
MEYLE126 625 0005
MONROEE8401
QUINTON HAZELL879035
RED-LINE39AU021
SACHS133049
SACHSE1061G
STARLINETL C50027.2
TRISCAN8705 29116
VITAL SUSPENSIONS111014.0
VITAL SUSPENSIONS211014

Shock Absorber OPTIMAL A-1445Gcompatible car models

Car modelsAUDI: A6 C6 (4F2), A6 C6 Avant (4F5)
Engines2.0 TDI
Year of manufacture2004-2011
Manufacturer article number (MPN)A-1445G
OE part numbers4F0 413 031 AL, 4F0 413 031 AM, 4F0 413 031 AS, 4F0 413 031 BN, 4F0 413 031 BQ
Compatibility check

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Description and what's included

OPTIMAL a-1445g . Bore Diameter 1 [mm]: 12 mm. Bore Diameter 2 [mm]: 12 mm. Distance of mounting bores [mm]: 45 mm. Fitting Position: VA. Piston Rod Diameter [mm]: 15 mm. Piston Rod Length [mm]: 237 mm. Shock Absorber Design: 3. Shock Absorber Mounting Type: 3

What's included:
  • 1x Shock Absorber
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Tracked standard shipping.

  • Standard delivery: 5–9 business days
  • Order before 5pm — ships the next working day
  • 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 Shock Absorber compatible with my car?

This Shock Absorber fits AUDI 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 Shock Absorber have?

This OPTIMAL Shock Absorber has the following specifications: Fitting Position: VA; Shock Absorber Type: 2; Shock Absorber Design: 3; Shock Absorber System: 2; Shock Absorber Mounting Type: 3; Shock Absorber Mounting Type: 6. Check the full specifications table above for complete details.

What OE part numbers does this Shock Absorber replace?

This Shock Absorber replaces OE part numbers: 4F0 413 031 AL, 4F0 413 031 AM, 4F0 413 031 AS, 4F0 413 031 BN, 4F0 413 031 BQ. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Shock Absorber cost?

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

How do I know when to replace my Shock Absorber?

Look for excessive bouncing over bumps, nose-diving during braking, uneven tyre wear, fluid leaks on the shock body, or poor handling. Shocks should be inspected every 50,000 miles.

What tools do I need to replace a Shock Absorber?

Tools needed: floor jack, axle stands, 18-21mm socket for wheel bolts, spring compressor (if top mount must be removed), 17-19mm open-end spanner for shock piston nut, torque wrench. Difficulty: Moderate DIY. Safety warning: Coil springs store enormous energy -- only use purpose-built automotive spring compressors rated for the load. A spring released unexpectedly can cause fatal injury. Never improvise with non-rated tools.

Can I use this part as a replacement for OE 4F0 413 031 AL?

Yes, this OPTIMAL Shock Absorber is a direct replacement for OE part number 4F0 413 031 AL. 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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