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Details
| Specification | Value |
|---|---|
| Brand | OPTIMAL |
| MPN | a-3455g |
| Fitting Position | Front Axle |
| Thread Size | M14x1.5 |
| Piston Rod Diameter [mm] | 22 mm |
| Article number of recommended accessories | F8-7132 |
| Article number of recommended accessories | AK-735264 |
| Article number of recommended accessories | F8-7131 |
| Housing diameter in clamping area [mm] | 50 mm |
OE/OEM numbers (49)
Search by this OE number to find compatible parts
- AUDI / VWโ1K0 413 031 AC
- AUDI / SKODA / VW / SEAT / VAGโ1K0 413 031 AD
- AUDI / SKODA / VWโ1K0 413 031 AE
- AUDI / SEAT / SKODA / VW / VAGโ1K0 413 031 AF
- AUDI / SEAT / SKODA / VW / VAGโ1K0 413 031 AJ
- VW / AUDI / SKODA / VAG / SEATโ1K0 413 031 AP
- AUDIโ1K0 413 031 AQ
- AUDIโ1K0 413 031 AR
- AUDIโ1K0 413 031 AS
- AUDI / VWโ1K0 413 031 AT
- VWโ1K0 413 031 BC
- AUDI / SKODA / VWโ1K0 413 031 BE
- AUDI / SKODA / VWโ1K0 413 031 BF
- AUDI / VW / SKODAโ1K0 413 031 BG
- AUDI / SKODA / VWโ1K0 413 031 BH
- AUDI / SKODA / VWโ1K0 413 031 BJ
- AUDI / VW / SKODAโ1K0 413 031 BK
- VW / SKODAโ1K0 413 031 BL
- VWโ1K0 413 031 BS
- VWโ1K0 413 031 BT
- SEATโ1K0413031CA
- VW / VW (FAW)โ1K0 413 031 CJ
- VWโ1K0 413 031 CK
- VWโ1K0 413 031 CM
- VWโ1K0 413 031 CQ
- VWโ1K0 413 031 CR
- VWโ1K0 413 031 CS
- SEATโ1K0 413 031 CT
- AUDIโ1K0 413 031 DA
- VWโ1K0 413 031 DE
- VWโ1K0 413 031 DF
- VWโ1K0 413 031 DG
- VWโ1K0 413 031 DJ
- VWโ1K0 413 031 DL
- SKODAโ1K0 413 031 ED
- VWโ5C0 413 031 AH
- VWโ5C0 413 031 AJ
- VWโ5C0 413 031 AM
- VWโ5C0 413 031 AN
- VWโ5C0 413 031 AQ
- VWโ5C0 413 031 AR
- VWโ5C0 413 031 AS
- VWโ5C0 413 031 BR
- VWโ5C0 413 031 BS
- VWโ5C0 413 031 BT
- VWโ5C0 413 031 F
- VWโ5C0 413 031 G
- VWโ5C0 413 031 J
- VWโ5C0 413 031 S
Where this part fits
Original-fit position for OE 1K0413031CQ. The red ring marks where this part installs on the vehicle.

About this product
OPTIMAL shock absorber (A-3455G) restores factory damping characteristics by controlling spring oscillation on both compression and rebound strokes, recovering steering precision and reducing body roll. Damping configuration โ Fitting Position: Front Axle, Shock Absorber Type: Aluminium, Shock Absorber Design: Aluminium, Shock Absorber System: Aluminium โ 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, SEAT, SKODA, VW and 1 other makes applications, allowing a straight-swap installation without drilling or bracket modification. Supersedes manufacturer part numbers: 110127.0, 126 623 0025, 126 623 0050, 16496 and 115 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 80,000โ100,000 miles โ 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 โ 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 โ allow 2โ3 hours per axle. When selecting shock absorbers, match the damper type (twin-tube, monotube, or gas-pressurised) to the original specification โ 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 โ 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 (62)
Show all 62 OE numbers
Shock Absorber OPTIMAL A-3455G โ compatible car models
| Car models | AUDI: A3 (8P1), A3 Convertible (8P7), A3 Sportback (8PA); SEAT: ALTEA (5P1), ALTEA XL (5P5, 5P8), LEON (1P1), TOLEDO III (5P2); SKODA: OCTAVIA II (1Z3), OCTAVIA II Combi (1Z5), YETI (5L); VW: BEETLE (5C1, 5C2), BEETLE Convertible (5C7, 5C8), GOLF PLUS V (5M1, 521), GOLF V (1K1), GOLF VAN VI Variant (AJ5), GOLF VI (5K1), GOLF VI Variant (AJ5), GOLF V Variant (1K5), JETTA III (1K2), JETTA IV (162, 163, AV3, AV2); VW (FAW): SAGITAR (9L2) |
|---|---|
| Engines | 1.2 TSI; 1.2 TFSI; 1.6; 1.4 16V; 1.2 TSi; 1.4; 1.4 TSI |
| Year of manufacture | 2003-2019 |
| Manufacturer article number (MPN) | A-3455G |
| OE part numbers | 1K0 413 031 AC, 1K0 413 031 AD, 1K0 413 031 AE, 1K0 413 031 AF, 1K0 413 031 AJ, 1K0 413 031 AP, 1K0 413 031 AQ, 1K0 413 031 AR, 1K0 413 031 AS, 1K0 413 031 AT, 1K0 413 031 BC, 1K0 413 031 BE, 1K0 413 031 BF, 1K0 413 031 BG, 1K0 413 031 BH, 1K0 413 031 BJ, 1K0 413 031 BK, 1K0 413 031 BL, 1K0 413 031 BS, 1K0 413 031 BT (+29 more) |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
OPTIMAL a-3455g . Article number of recommended accessories: AK-735264. Article number of recommended accessories: F8-7131. Article number of recommended accessories: F8-7132. Fitting Position: VA. Housing diameter in clamping area [mm]: 50 mm. Piston Rod Diameter [mm]: 22 mm. Shock Absorber Design: 2. Shock Absorber Mounting Type: 3
- 1x Shock Absorber
Shipping, returns, warranty
Free UK delivery on orders over ยฃ99.00. Tracked standard shipping.
- Standard delivery: 5โ9 business days
- Order before 5pm โ 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, SEAT, SKODA, VW, VW (FAW) vehicles. Use the vehicle selector at the top of the page to check exact compatibility โ 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: 2; Shock Absorber System: 2; Shock Absorber Mounting Type: 3; Thread Size: M14x1,5. 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: 1K0 413 031 AC, 1K0 413 031 AD, 1K0 413 031 AE, 1K0 413 031 AF, 1K0 413 031 AJ, 1K0 413 031 AP, 1K0 413 031 AQ, 1K0 413 031 AR and 41 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 ยฃ62.99. 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 1K0 413 031 AC?
Yes, this OPTIMAL Shock Absorber is a direct replacement for OE part number 1K0 413 031 AC. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
