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CP247
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BrandOPTIMAL
MPNA-3694G
OE refs18
SKU0129-A-3694G
GTIN / EAN4031185281423

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Details

SpecificationValue
BrandOPTIMAL
MPNa-3694g
Fitting PositionFront Axle
Thread SizeM12x1.5
Piston Rod Length [mm]158 mm
Piston Rod Diameter [mm]15 mm
Article number of recommended accessoriesF8-6003
Article number of recommended accessoriesF8-6001
Article number of recommended accessoriesF8-5994
Suspension Strut Outer Diameter [mm]45 mm

OE/OEM numbers (18)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE 4B0412031BT. The red ring marks where this part installs on the vehicle.

Gas shock absorber marked with: ***** Caution Hazardous ****** — A6 A6/S5 Avant Quattro C5 (Typ 4B) (2002–2004) — Shock absorbers
A6 A6/S5 Avant Quattro C5 (Typ 4B) (2002–2004) · Shock absorbersPosition 2

About this product

OPTIMAL shock absorber (A-3694G) 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: Copper, 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, BEDFORD, SKODA, VW applications, allowing a straight-swap installation without drilling or bracket modification. Supersedes manufacturer part numbers: 111008.0, 126 625 0003, 126 625 0010, 179831 and 68 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 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

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Show all 54 OE numbers
AIC52034
AIC52564
BILSTEINBNE-B993
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BOGE33-117-F
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BOGE33-201-A
BOGE33-201-F
DIEDERICHS9970180
FEBEST2307G-020F
FEBEST2307G-021F
FEBEST23110-001F
HERTH+BUSS JAKOPARTSJ4300883
HERTH+BUSS JAKOPARTSJ4300898
KYB341273
KYB341844£62.99
METZGER AUTOTEILE2340130
MONROE26650
MONROE376028SP
MONROE376030SP
MONROE376044SP
MONROE376054SP
MONROE376091SP
MONROE376237SP
MONROEE2022
MONROEE2024
MONROEE2043
MONROEE2047
MONROEE2048
NAPANSA1171
QUINTON HAZELL179831
QUINTON HAZELL179917
RED-LINE39AU014
SACHS280 539
SACHS280 541
SACHS280 543
SACHS557839
SACHSE1017G
SIDATF210G1382
STARLINETL S00010.2
TRISCAN8705 29108
VAICOV10-1864
VITAL SUSPENSIONS111008.0
VITAL SUSPENSIONS211008

Shock Absorber OPTIMAL A-3694Gcompatible car models

Car modelsAUDI: A4 B5 (8D2), A4 B5 Avant (8D5), A4 B6 (8E2), A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6); BEDFORD: MIDI Van; SKODA: SUPERB I (3U4); VW: PASSAT B5 (3B2), PASSAT B5.5 (3B3), PASSAT B5.5 Variant (3B6), PASSAT B5 Variant (3B5)
Engines1.6; 1.8 T; 1.8; 1.0 All-wheel Drive
Year of manufacture1984-2008
Manufacturer article number (MPN)A-3694G
OE part numbers3B0 413 031 AB, 3B0 413 031 AC, 3B0 413 031 BS, 3B0 413 031 P, 3B0 413 031 Q, 3B0 413 031 R, 3B0 413 031 S, 3B7 413 031, 4B0 412 031 BD, 4B0 412 031 BM, 4B0 412 031 BN, 4B0 412 031 BT, 4B0 412 031 CA, 4B0 412 031 CE, 4B3 413 031 F, 8D0 413 031 BL, 8D0 413 031 BN, 8D0 413 031 BS
Compatibility check

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Description and what's included

OPTIMAL a-3694g . Article number of recommended accessories: F8-5994. Article number of recommended accessories: F8-6001. Article number of recommended accessories: F8-6003. Fitting Position: VA. Piston Rod Diameter [mm]: 15 mm. Piston Rod Length [mm]: 158 mm. Shock Absorber Design: 4. Shock Absorber Mounting Type: 3

What's included:
  • 1x Shock Absorber
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 Shock Absorber compatible with my car?

This Shock Absorber fits AUDI, BEDFORD, SKODA, VW 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: 4; Shock Absorber System: 2; Shock Absorber Mounting Type: 6; Shock Absorber Mounting Type: 3. 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: 3B0 413 031 AB, 3B0 413 031 AC, 3B0 413 031 BS, 3B0 413 031 P, 3B0 413 031 Q, 3B0 413 031 R, 3B0 413 031 S, 3B7 413 031 and 10 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Shock Absorber cost?

This OPTIMAL Shock Absorber is available for £66.99. Shock Absorber prices vary depending on brand, specifications, and vehicle compatibility. OPTIMAL parts offer a balance of quality and value, backed by 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 3B0 413 031 AB?

Yes, this OPTIMAL Shock Absorber is a direct replacement for OE part number 3B0 413 031 AB. 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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