Replacing the rear shock absorber on a ŠKODA Octavia A7: instructions with photos and nuances

Rear shock absorbers ŠKODA Octavia A7 (including restyled versions 2017–2023) is a critical suspension element that affects handling, comfort and safety. Their wear is manifested not only by knocking when driving over uneven surfaces, but also by deterioration of road grip, especially at high speeds. Unlike the front struts, the rear shock absorbers are Octavia A7 They are easier to change, but require attention to detail: from the correct selection of spare parts to compliance with tightening torques.

This article will help you figure out how to replace a rear shock absorber with your own hands, without resorting to the services of a service station. We will consider the choice between original parts (5Q0 513 025/026) and analogues from Monroe, Boge or Kayaba, we will list the necessary tools (including little-known “tricks” for convenience), and also analyze typical mistakes that lead to squeaks or premature failure of new shock absorbers. We will pay special attention to the nuances for versions with air suspension and cars on sports suspension (for example, Octavia RS).

Signs of faulty rear shock absorbers

The first signal of problems with shock absorbers is not always a knock. On Octavia A7 wear often manifests itself indirectly:

• 🔍 Uneven rear tire wear (especially along the inner edge) - indicates a violation of the suspension geometry.
• 💦 Body "bouncing" after passing speed bumps, the shock absorber does not dampen vibrations.
• 🚗 Pulling the car to the side when braking or on rough roads (often confused with wheel alignment problems).
• 🔧 Oil stains on the shock absorber body - a clear sign of loss of tightness.

On Octavia A7 with a mileage of more than 100 thousand km, it is worth checking the shock absorbers every 20–30 thousand km, even if there are no obvious symptoms. This is especially true for cars operated on bad roads or with frequent overloads. Important: on versions with air suspension (DCC) wear of shock absorbers can be disguised as malfunctions of the electronic system - it is better to start diagnostics with a visual inspection.

⚠️ Attention! If a squeak appears after replacing the shock absorbers, check the condition guide anthers and support bearings. On Octavia A7 Their wear is often overlooked, leading to repeated suspension disassembly.

Selection of spare parts: original vs analogues

Original rear shock absorbers for ŠKODA Octavia A7 go under the articles:

• 5Q0 513 025 - right;
• 5Q0 513 026 - left.

The cost of the original is from 8 to 12 thousand rubles per piece. However, many owners choose analogues that are not inferior in quality, but are 30–50% cheaper. The table below shows the tested options:

Brand	Article	Average price (pieces)	Features
Monroe	G4484 / G4485	5 500–6 500 ₽	Softer than the original, suitable for a comfortable ride
Boge	S40-18103 / S40-18104	6 000–7 000 ₽	Harder, recommended for Octavia RS
Kayaba (KYB)	349043 / 349044	5 000–5 800 ₽	Optimal price/quality balance, often installed at service stations
Sachs	315 524 / 315 525	7 000–8 000 ₽	Durable, but may be too stiff for standard suspension

When choosing analogues, pay attention to gas type (oil or gas-oil). For Octavia A7 With the factory suspension, oil options are suitable (Monroe, Kayaba), and for sports versions or heavily loaded cars it is better to take gas-oil ones (Boge, Sachs). Also check the contents: some sets do not include anthers and bumpers, you will have to buy them separately (items: 5Q0 512 301 for the boot, 5Q0 512 309 for the bumper).

Necessary tools and preparation

To replace rear shock absorbers with Octavia A7 you will need:

• 🔧 Jack and supports (or a lift) - be sure to fix the machine on a flat surface!
• 🔩 Socket heads at 13, 16, 18 mm and extension cord (for the lower shock absorber bolt).
• 🔧 Spring puller — if you plan to change springs or support bearings.
• 🛠️ WD-40 or similar penetrating lubricant - bolts often stick.
• 🔨 Hammer and punch - for carefully knocking out bolts.
• 📏 Torque wrench - critical for tightening torques (see table below).

Before starting work, complete the following steps:

Relieve pressure in air suspension (if equipped) DCC) through VCDS|Disconnect the battery terminal (to prevent the sensors from triggering)|Clean the threaded connections from dirt with a wire brush|Put supports under the front wheels|Prepare new shock absorbers (bleed the oil ones before installation)-->

If you have version with DCC (dynamic chassis), before replacing shock absorbers, it is necessary deactivate the system via diagnostic scanner (VCDS, OBDeleven). Otherwise, the electronic unit may generate errors. Also note that on machines with DCC shock absorbers have built-in position sensors, and replacing them requires adaptation through software.

⚠️ Attention! On Octavia A7 with air suspension (Air Suspension) replacement of shock absorbers must be accompanied by a check compressor and air springs. If the cylinders are worn out, new shock absorbers will last much less.

Step-by-step replacement instructions

The process of replacing the rear shock absorber with ŠKODA Octavia A7 takes about 1–1.5 hours per side. Follow this algorithm:

1. Removing the wheel and accessing the shock absorber

   Jack up the car and remove the wheel. Unscrew plastic clipsholding the fender liner (if it interferes). In the arch you will see the upper shock absorber support (under the hood it is covered by the trunk trim).

2. Unscrewing the upper support

   In the trunk, remove the trim from the side of the shock absorber being replaced. Unscrew three nuts support mounting (13 mm head). Hold the shock absorber rod to prevent it from turning.

3. Bottom mount

   Unscrew from below shock absorber-to-arm bolt (18 mm head). It often sticks - use it WD-40 and an extension for the lever. After removing the bolt, the shock absorber can be pulled down.

4. Installing a new shock absorber

   Before installation upgrade oil shock absorber (compress/uncompress 5–6 times). Insert it into place, securing the bottom bolt. Tighten the upper nuts sequentiallyto avoid skew.

Tightening torques (Nm):

• Upper support nuts: 20–25;
• Bottom mounting bolt: 80–100;
• Rod nut (if the stand was disassembled): 50–60.

After replacing both shock absorbers necessarily check:

• 🔧 Condition anti-roll bar and its bushings;
• 🔩 Tightening all bolts (after 50–100 km);
• 🚗 Wheel alignment - on Octavia A7 After replacing the shock absorbers it may go away.

Common mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when replacing rear shock absorbers with Octavia A7. Here are the most common:

• 🔧 Incorrect pumping oil shock absorbers before installation → leads to their rapid failure.
• 🔩 Retightening the top nuts → deformation of the support and squeaks when moving.
• 🚗 Ignoring spring checks → if they sag, new shock absorbers will not work effectively.
• 🔧 Replacing only one shock absorber → suspension imbalance, car drift.

Pay special attention anthers and bumpers. On Octavia A7 they often break when dismantling the old shock absorber. If you install a new shock absorber with a damaged boot, dirt will get inside and the part will last 2-3 times less. Also check compression progress buffer (article 5Q0 512 181) - its wear accelerates the destruction of the shock absorber.

What should I do if after replacing the shock absorbers the car became stiffer?

If the new shock absorbers are stiffer than the original ones, check:

1. Correct bleeding (gas-oil shock absorbers do not require bleeding, but they cannot be compressed before installation).

2. Condition of the springs - perhaps they have lost their elasticity and cannot cope with the load.

3. Tightening torques - overtightened bolts increase rigidity.

4. Brand of shock absorbers: Boge and Sachs usually tougher Monroe or Kayaba.

If the problem persists, consider installing shock absorbers with a different damping ratio (e.g. KYB Excel-G instead of KYB Ultra SR).

Features for versions with DCC and air suspension

If your Octavia A7 equipped dynamic chassis (DCC) or air suspension, replacing shock absorbers has nuances:

• 🔧 On DCC shock absorbers are integrated with solenoid valves. Their replacement requires adaptation via a diagnostic scanner (for example, VCDS in the block 03 — ABS).
• 🔩 On air suspension (Air Suspension) shock absorbers are assembled with pneumatic bellows. Their replacement must be accompanied by inspection compressor and receiver.
• 🚗 After replacing with DCC must be completed sensor calibration via menu Adaptation → Basic installation.

For DCC original shock absorbers go under the article numbers:

• 5Q0 513 025 C (right);
• 5Q0 513 026 C (left).

Their cost starts from 20 thousand rubles per piece. Analogues for DCC practically none - only the original or restored versions.

💡

On machines with DCC After replacing the shock absorbers, be sure to perform a basic installation via the diagnostic scanner. Without this, the system will not work correctly, and an error will appear on the panel P1650 (damping fault).

When to contact a service station

Despite the relative ease of replacing rear shock absorbers, in some cases it is better to trust the professionals:

• 🔧 If you have Octavia A7 with air suspension — special equipment is required to check the tightness of the system.
• 🔩 If the shock absorber mounting bolts ripped off or they are so stuck that they cannot be unscrewed without the risk of damaging the lever.
• 🚗 If after replacement there are extraneous noise (creaks, knocks) that cannot be eliminated on your own.
• 🔧 If replacement is required springs or support bearings — for this you need a puller and experience.

Average cost of replacing rear shock absorbers at a service station for Octavia A7 — from 3 to 5 thousand rubles per side (excluding the cost of spare parts). If you are not confident in your abilities, especially when working with DCC or air suspension, it’s better not to risk it. Errors during replacement can lead to damage to suspension arms or incorrect operation of electronic systems.

FAQ: Frequently asked questions

Is it possible to replace just one rear shock absorber?

Technically possible, but not recommended. On Octavia A7 The rear shock absorbers wear relatively evenly. Replacing just one will lead to an imbalance in the suspension, which will result in the car pulling to the side or uneven tire wear. The exception is if the second shock absorber is practically new (for example, recently replaced).

Is it necessary to do a wheel alignment after replacing shock absorbers?

On Octavia A7 replacing rear shock absorbers no effect on the wheel alignment angles, since they are not adjustable. However, if you notice that your car is pulling to one side or your tires are wearing unevenly, check body geometry and condition of silent blocks levers. Perhaps the problem lies with them.

How to bleed an oil shock absorber before installation?

Bleeding algorithm for shock absorbers Monroe, Kayaba and other oil models:

1. Turn the shock absorber upside down.
2. Squeeze it smoothly until it stops (without jerking!).
3. Hold in a compressed position for 2-3 seconds.
4. Turn the stem upside down and release it slowly.
5. Repeat 5-6 times. After the last cycle, do not turn the shock absorber over before installation!

Gas-oil shock absorbers (Boge, Sachs) pump no need — they cannot be compressed before installation!

Which shock absorbers are best for the Octavia A7 with a mileage of more than 150 thousand km?

For cars with high mileage we recommend:

• Monroe G4484/G4485 — soft, compensate for wear of other suspension elements.
• Kayaba (KYB) Excel-G — reliable and durable, suitable for daily use.

Avoid options that are too harsh (Boge, Sachs), since they will “kill” sagging springs and silent blocks faster.

What to do if a squeaking noise appears after replacing shock absorbers?

The squeak is most often caused by:

• Incorrect tightening top nuts supports;
• Wear and tear support bearing (article 5Q0 512 329);
• Lack of lubrication between support and body (use graphite lubricant).

Also check the integrity anthers and correct installation fenders.